NCSC-2026-0010
Vulnerability from csaf_ncscnl - Published: 2026-01-13 19:18 - Updated: 2026-03-20 14:03Summary
Kwetsbaarheden verholpen in Microsoft Office
Notes
The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions:
NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein.
NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory.
This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings.
Feiten: Microsoft heeft kwetsbaarheden verholpen in diverse Office-producten.
Interpretaties: Een kwaadwillende kan de kwetsbaarheden misbruiken om zich voor te doen als andere gebruiker, toegang te krijgen tot gevoelige gegevens of willekeurige code uit te voeren in de context van het slachtoffer.
Voor succesvol misbruik moet de kwaadwillende geauthenticeerd zijn op het kwetsbare systeem, of het slachtoffer misleiden een malafide bestand te openen of link te volgen.
Van de kwetsbaarheid met kenmerk CVE-2026-20963 wordt gemeld dat deze actief en gericht is misbruikt. De kwetsbaarheid stelt een kwaadwillende in staat om willekeurige code uit te voeren op een kwetsbaar Sharepoint systeem. Met name publiek toegankelijke installaties lopen verhoogd risico op misbruik.
Buiten meldingen van actief misbruik is (nog) geen publieke Proof-of-Concept-code of exploit bekend. Door de media-aandacht echter, verwacht het NCSC dat deze wellicht op korte termijn beschikbaar komt, waardoor het risico op grootschalig misbruik zal toenemen.
```
Microsoft Office Word:
|----------------|------|-------------------------------------|
| CVE-ID | CVSS | Impact |
|----------------|------|-------------------------------------|
| CVE-2026-20944 | 7.80 | Uitvoeren van willekeurige code |
| CVE-2026-20948 | 7.80 | Uitvoeren van willekeurige code |
|----------------|------|-------------------------------------|
Microsoft Office SharePoint:
|----------------|------|-------------------------------------|
| CVE-ID | CVSS | Impact |
|----------------|------|-------------------------------------|
| CVE-2026-20947 | 8.80 | Uitvoeren van willekeurige code |
| CVE-2026-20951 | 7.80 | Uitvoeren van willekeurige code |
| CVE-2026-20959 | 4.60 | Voordoen als andere gebruiker |
| CVE-2026-20963 | 8.80 | Uitvoeren van willekeurige code |
| CVE-2026-20958 | 5.40 | Toegang tot gevoelige gegevens |
|----------------|------|-------------------------------------|
Microsoft Office:
|----------------|------|-------------------------------------|
| CVE-ID | CVSS | Impact |
|----------------|------|-------------------------------------|
| CVE-2026-20943 | 7.00 | Uitvoeren van willekeurige code |
| CVE-2026-20953 | 8.40 | Uitvoeren van willekeurige code |
| CVE-2026-20952 | 8.40 | Uitvoeren van willekeurige code |
|----------------|------|-------------------------------------|
Microsoft Office Excel:
|----------------|------|-------------------------------------|
| CVE-ID | CVSS | Impact |
|----------------|------|-------------------------------------|
| CVE-2026-20946 | 7.80 | Uitvoeren van willekeurige code |
| CVE-2026-20955 | 7.80 | Uitvoeren van willekeurige code |
| CVE-2026-20956 | 7.80 | Uitvoeren van willekeurige code |
| CVE-2026-20949 | 7.80 | Omzeilen van beveiligingsmaatregel |
| CVE-2026-20950 | 7.80 | Uitvoeren van willekeurige code |
| CVE-2026-20957 | 7.80 | Uitvoeren van willekeurige code |
|----------------|------|-------------------------------------|
```
Oplossingen: Microsoft heeft updates beschikbaar gesteld waarmee de beschreven kwetsbaarheden worden verholpen. We raden u aan om deze updates te installeren. Meer informatie over de kwetsbaarheden, de installatie van de updates en eventuele work-arounds vindt u op:
https://portal.msrc.microsoft.com/en-us/security-guidance
Kans: medium
Schade: high
CWE-20: Improper Input Validation
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
CWE-122: Heap-based Buffer Overflow
CWE-125: Out-of-bounds Read
CWE-191: Integer Underflow (Wrap or Wraparound)
CWE-284: Improper Access Control
CWE-416: Use After Free
CWE-426: Untrusted Search Path
CWE-502: Deserialization of Untrusted Data
CWE-822: Untrusted Pointer Dereference
CWE-918: Server-Side Request Forgery (SSRF)
An untrusted search path vulnerability in Microsoft Office allows an attacker to execute unauthorized local code by exploiting the way Office handles file paths.
CWE-426 - Untrusted Search PathAn SQL injection vulnerability in Microsoft Office SharePoint allows authorized users to remotely execute code over a network, posing a significant security risk.
CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')Improper input validation in Microsoft Office SharePoint allows attackers to execute unauthorized local code, posing a significant security risk.
Improper input neutralization in Microsoft Office SharePoint results in cross-site scripting vulnerabilities that allow authorized attackers to perform network spoofing.
CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Microsoft Office SharePoint contains a deserialization vulnerability that allows unauthorized remote code execution by processing untrusted data.
9.8 (Critical)
An untrusted pointer dereference vulnerability in Microsoft Office Word allows unauthorized local code execution, posing a significant security risk.
CWE-822 - Untrusted Pointer DereferenceA server-side request forgery (SSRF) vulnerability in Microsoft Office SharePoint allows an authorized attacker to disclose sensitive information over a network.
CWE-918 - Server-Side Request Forgery (SSRF)A use-after-free vulnerability in Microsoft Office allows unauthorized local code execution, posing a significant security risk.
CWE-416 - Use After FreeA use-after-free vulnerability in Microsoft Office allows unauthorized local code execution, posing a significant security risk.
CWE-416 - Use After FreeAn out-of-bounds read vulnerability in Microsoft Office Word allows an unauthorized attacker to execute code locally, posing a significant security risk.
CWE-125 - Out-of-bounds ReadAn out-of-bounds read vulnerability in Microsoft Office Excel allows an unauthorized attacker to execute code locally, posing a significant security risk.
CWE-125 - Out-of-bounds ReadAn untrusted pointer dereference vulnerability in Microsoft Office Excel allows an attacker to execute unauthorized local code by exploiting improper memory handling.
CWE-822 - Untrusted Pointer DereferenceAn untrusted pointer dereference vulnerability in Microsoft Office Excel allows an attacker to execute unauthorized local code by exploiting improper memory handling.
CWE-822 - Untrusted Pointer DereferenceAn improper access control vulnerability in Microsoft Office Excel allows a local unauthorized attacker to bypass a security feature, potentially compromising application security.
A vulnerability in Microsoft Office Excel, termed 'use after free,' allows unauthorized attackers to execute code locally on affected systems.
CWE-416 - Use After FreeAn integer underflow vulnerability in Microsoft Office Excel allows unauthorized attackers to execute code locally.
CWE-122 - Heap-based Buffer OverflowReferences
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"text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions:\n\n NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein.\n\n NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory.\n This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings."
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"text": "Microsoft heeft kwetsbaarheden verholpen in diverse Office-producten.",
"title": "Feiten"
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{
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"text": "Een kwaadwillende kan de kwetsbaarheden misbruiken om zich voor te doen als andere gebruiker, toegang te krijgen tot gevoelige gegevens of willekeurige code uit te voeren in de context van het slachtoffer.\n\nVoor succesvol misbruik moet de kwaadwillende geauthenticeerd zijn op het kwetsbare systeem, of het slachtoffer misleiden een malafide bestand te openen of link te volgen.\n\nVan de kwetsbaarheid met kenmerk CVE-2026-20963 wordt gemeld dat deze actief en gericht is misbruikt. De kwetsbaarheid stelt een kwaadwillende in staat om willekeurige code uit te voeren op een kwetsbaar Sharepoint systeem. Met name publiek toegankelijke installaties lopen verhoogd risico op misbruik.\nBuiten meldingen van actief misbruik is (nog) geen publieke Proof-of-Concept-code of exploit bekend. Door de media-aandacht echter, verwacht het NCSC dat deze wellicht op korte termijn beschikbaar komt, waardoor het risico op grootschalig misbruik zal toenemen.\n\n```\nMicrosoft Office Word: \n|----------------|------|-------------------------------------|\n| CVE-ID | CVSS | Impact |\n|----------------|------|-------------------------------------|\n| CVE-2026-20944 | 7.80 | Uitvoeren van willekeurige code | \n| CVE-2026-20948 | 7.80 | Uitvoeren van willekeurige code | \n|----------------|------|-------------------------------------|\n\nMicrosoft Office SharePoint: \n|----------------|------|-------------------------------------|\n| CVE-ID | CVSS | Impact |\n|----------------|------|-------------------------------------|\n| CVE-2026-20947 | 8.80 | Uitvoeren van willekeurige code | \n| CVE-2026-20951 | 7.80 | Uitvoeren van willekeurige code | \n| CVE-2026-20959 | 4.60 | Voordoen als andere gebruiker | \n| CVE-2026-20963 | 8.80 | Uitvoeren van willekeurige code | \n| CVE-2026-20958 | 5.40 | Toegang tot gevoelige gegevens | \n|----------------|------|-------------------------------------|\n\nMicrosoft Office: \n|----------------|------|-------------------------------------|\n| CVE-ID | CVSS | Impact |\n|----------------|------|-------------------------------------|\n| CVE-2026-20943 | 7.00 | Uitvoeren van willekeurige code | \n| CVE-2026-20953 | 8.40 | Uitvoeren van willekeurige code | \n| CVE-2026-20952 | 8.40 | Uitvoeren van willekeurige code | \n|----------------|------|-------------------------------------|\n\nMicrosoft Office Excel: \n|----------------|------|-------------------------------------|\n| CVE-ID | CVSS | Impact |\n|----------------|------|-------------------------------------|\n| CVE-2026-20946 | 7.80 | Uitvoeren van willekeurige code | \n| CVE-2026-20955 | 7.80 | Uitvoeren van willekeurige code | \n| CVE-2026-20956 | 7.80 | Uitvoeren van willekeurige code | \n| CVE-2026-20949 | 7.80 | Omzeilen van beveiligingsmaatregel | \n| CVE-2026-20950 | 7.80 | Uitvoeren van willekeurige code | \n| CVE-2026-20957 | 7.80 | Uitvoeren van willekeurige code | \n|----------------|------|-------------------------------------|\n```",
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"text": "Deserialization of Untrusted Data",
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"text": "Untrusted Pointer Dereference",
"title": "CWE-822"
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"title": "Kwetsbaarheden verholpen in Microsoft Office",
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"current_release_date": "2026-03-20T14:03:59.225773Z",
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"vulnerabilities": [
{
"cve": "CVE-2026-20943",
"cwe": {
"id": "CWE-426",
"name": "Untrusted Search Path"
},
"notes": [
{
"category": "other",
"text": "Untrusted Search Path",
"title": "CWE-426"
},
{
"category": "description",
"text": "An untrusted search path vulnerability in Microsoft Office allows an attacker to execute unauthorized local code by exploiting the way Office handles file paths.",
"title": "Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
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"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
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"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2026-20943 | NCSC-NL Website",
"url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-20943.json"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 7.0,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
"version": "3.1"
},
"products": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
}
],
"title": "CVE-2026-20943"
},
{
"cve": "CVE-2026-20947",
"cwe": {
"id": "CWE-89",
"name": "Improper Neutralization of Special Elements used in an SQL Command (\u0027SQL Injection\u0027)"
},
"notes": [
{
"category": "other",
"text": "Improper Neutralization of Special Elements used in an SQL Command (\u0027SQL Injection\u0027)",
"title": "CWE-89"
},
{
"category": "description",
"text": "An SQL injection vulnerability in Microsoft Office SharePoint allows authorized users to remotely execute code over a network, posing a significant security risk.",
"title": "Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2026-20947 | NCSC-NL Website",
"url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-20947.json"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 8.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
"version": "3.1"
},
"products": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
}
],
"title": "CVE-2026-20947"
},
{
"cve": "CVE-2026-20951",
"notes": [
{
"category": "description",
"text": "Improper input validation in Microsoft Office SharePoint allows attackers to execute unauthorized local code, posing a significant security risk.",
"title": "Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2026-20951 | NCSC-NL Website",
"url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-20951.json"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
"version": "3.1"
},
"products": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
}
],
"title": "CVE-2026-20951"
},
{
"cve": "CVE-2026-20959",
"cwe": {
"id": "CWE-79",
"name": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)"
},
"notes": [
{
"category": "other",
"text": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
"title": "CWE-79"
},
{
"category": "description",
"text": "Improper input neutralization in Microsoft Office SharePoint results in cross-site scripting vulnerabilities that allow authorized attackers to perform network spoofing.",
"title": "Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2026-20959 | NCSC-NL Website",
"url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-20959.json"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 4.6,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C",
"version": "3.1"
},
"products": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
}
],
"title": "CVE-2026-20959"
},
{
"cve": "CVE-2026-20963",
"cwe": {
"id": "CWE-502",
"name": "Deserialization of Untrusted Data"
},
"notes": [
{
"category": "other",
"text": "Deserialization of Untrusted Data",
"title": "CWE-502"
},
{
"category": "description",
"text": "Microsoft Office SharePoint contains a deserialization vulnerability that allows unauthorized remote code execution by processing untrusted data.",
"title": "Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2026-20963 | NCSC-NL Website",
"url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-20963.json"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
"version": "3.1"
},
"products": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
}
],
"title": "CVE-2026-20963"
},
{
"cve": "CVE-2026-20948",
"cwe": {
"id": "CWE-822",
"name": "Untrusted Pointer Dereference"
},
"notes": [
{
"category": "other",
"text": "Untrusted Pointer Dereference",
"title": "CWE-822"
},
{
"category": "description",
"text": "An untrusted pointer dereference vulnerability in Microsoft Office Word allows unauthorized local code execution, posing a significant security risk.",
"title": "Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2026-20948 | NCSC-NL Website",
"url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-20948.json"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
"version": "3.1"
},
"products": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
}
],
"title": "CVE-2026-20948"
},
{
"cve": "CVE-2026-20958",
"cwe": {
"id": "CWE-918",
"name": "Server-Side Request Forgery (SSRF)"
},
"notes": [
{
"category": "other",
"text": "Server-Side Request Forgery (SSRF)",
"title": "CWE-918"
},
{
"category": "description",
"text": "A server-side request forgery (SSRF) vulnerability in Microsoft Office SharePoint allows an authorized attacker to disclose sensitive information over a network.",
"title": "Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2026-20958 | NCSC-NL Website",
"url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-20958.json"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 5.4,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C",
"version": "3.1"
},
"products": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
}
],
"title": "CVE-2026-20958"
},
{
"cve": "CVE-2026-20953",
"cwe": {
"id": "CWE-416",
"name": "Use After Free"
},
"notes": [
{
"category": "other",
"text": "Use After Free",
"title": "CWE-416"
},
{
"category": "description",
"text": "A use-after-free vulnerability in Microsoft Office allows unauthorized local code execution, posing a significant security risk.",
"title": "Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2026-20953 | NCSC-NL Website",
"url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-20953.json"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 8.4,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
"version": "3.1"
},
"products": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
}
],
"title": "CVE-2026-20953"
},
{
"cve": "CVE-2026-20952",
"cwe": {
"id": "CWE-416",
"name": "Use After Free"
},
"notes": [
{
"category": "other",
"text": "Use After Free",
"title": "CWE-416"
},
{
"category": "description",
"text": "A use-after-free vulnerability in Microsoft Office allows unauthorized local code execution, posing a significant security risk.",
"title": "Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2026-20952 | NCSC-NL Website",
"url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-20952.json"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 8.4,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
"version": "3.1"
},
"products": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
}
],
"title": "CVE-2026-20952"
},
{
"cve": "CVE-2026-20944",
"cwe": {
"id": "CWE-125",
"name": "Out-of-bounds Read"
},
"notes": [
{
"category": "other",
"text": "Out-of-bounds Read",
"title": "CWE-125"
},
{
"category": "description",
"text": "An out-of-bounds read vulnerability in Microsoft Office Word allows an unauthorized attacker to execute code locally, posing a significant security risk.",
"title": "Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2026-20944 | NCSC-NL Website",
"url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-20944.json"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 8.4,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
"version": "3.1"
},
"products": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
}
],
"title": "CVE-2026-20944"
},
{
"cve": "CVE-2026-20946",
"cwe": {
"id": "CWE-125",
"name": "Out-of-bounds Read"
},
"notes": [
{
"category": "other",
"text": "Out-of-bounds Read",
"title": "CWE-125"
},
{
"category": "description",
"text": "An out-of-bounds read vulnerability in Microsoft Office Excel allows an unauthorized attacker to execute code locally, posing a significant security risk.",
"title": "Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2026-20946 | NCSC-NL Website",
"url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-20946.json"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
"version": "3.1"
},
"products": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
}
],
"title": "CVE-2026-20946"
},
{
"cve": "CVE-2026-20955",
"cwe": {
"id": "CWE-822",
"name": "Untrusted Pointer Dereference"
},
"notes": [
{
"category": "other",
"text": "Untrusted Pointer Dereference",
"title": "CWE-822"
},
{
"category": "description",
"text": "An untrusted pointer dereference vulnerability in Microsoft Office Excel allows an attacker to execute unauthorized local code by exploiting improper memory handling.",
"title": "Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2026-20955 | NCSC-NL Website",
"url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-20955.json"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
"version": "3.1"
},
"products": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
}
],
"title": "CVE-2026-20955"
},
{
"cve": "CVE-2026-20956",
"cwe": {
"id": "CWE-822",
"name": "Untrusted Pointer Dereference"
},
"notes": [
{
"category": "other",
"text": "Untrusted Pointer Dereference",
"title": "CWE-822"
},
{
"category": "description",
"text": "An untrusted pointer dereference vulnerability in Microsoft Office Excel allows an attacker to execute unauthorized local code by exploiting improper memory handling.",
"title": "Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2026-20956 | NCSC-NL Website",
"url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-20956.json"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
"version": "3.1"
},
"products": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
}
],
"title": "CVE-2026-20956"
},
{
"cve": "CVE-2026-20949",
"notes": [
{
"category": "description",
"text": "An improper access control vulnerability in Microsoft Office Excel allows a local unauthorized attacker to bypass a security feature, potentially compromising application security.",
"title": "Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2026-20949 | NCSC-NL Website",
"url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-20949.json"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
"version": "3.1"
},
"products": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
}
],
"title": "CVE-2026-20949"
},
{
"cve": "CVE-2026-20950",
"cwe": {
"id": "CWE-416",
"name": "Use After Free"
},
"notes": [
{
"category": "other",
"text": "Use After Free",
"title": "CWE-416"
},
{
"category": "description",
"text": "A vulnerability in Microsoft Office Excel, termed \u0027use after free,\u0027 allows unauthorized attackers to execute code locally on affected systems.",
"title": "Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2026-20950 | NCSC-NL Website",
"url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-20950.json"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
"version": "3.1"
},
"products": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
}
],
"title": "CVE-2026-20950"
},
{
"cve": "CVE-2026-20957",
"cwe": {
"id": "CWE-122",
"name": "Heap-based Buffer Overflow"
},
"notes": [
{
"category": "other",
"text": "Heap-based Buffer Overflow",
"title": "CWE-122"
},
{
"category": "other",
"text": "Integer Underflow (Wrap or Wraparound)",
"title": "CWE-191"
},
{
"category": "description",
"text": "An integer underflow vulnerability in Microsoft Office Excel allows unauthorized attackers to execute code locally.",
"title": "Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2026-20957 | NCSC-NL Website",
"url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-20957.json"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
"version": "3.1"
},
"products": [
"CSAFPID-1",
"CSAFPID-2",
"CSAFPID-3",
"CSAFPID-4",
"CSAFPID-5",
"CSAFPID-6",
"CSAFPID-7",
"CSAFPID-8",
"CSAFPID-9",
"CSAFPID-10",
"CSAFPID-11",
"CSAFPID-12",
"CSAFPID-13",
"CSAFPID-14",
"CSAFPID-15",
"CSAFPID-16",
"CSAFPID-17",
"CSAFPID-18",
"CSAFPID-19",
"CSAFPID-20",
"CSAFPID-21",
"CSAFPID-22",
"CSAFPID-23",
"CSAFPID-24",
"CSAFPID-25",
"CSAFPID-26",
"CSAFPID-27",
"CSAFPID-28"
]
}
],
"title": "CVE-2026-20957"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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