RHSA-2026:2714
Vulnerability from csaf_redhat - Published: 2026-02-16 11:45 - Updated: 2026-02-18 19:37Summary
Red Hat Security Advisory: freerdp security update
Notes
Topic
An update for freerdp is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. The xfreerdp client can connect to RDP servers such as Microsoft Windows machines, xrdp, and VirtualBox.
Security Fix(es):
* freerdp: FreeRDP: Heap buffer overflow leading to denial of service and potential code execution from a malicious server. (CVE-2026-23530)
* freerdp: FreeRDP: Denial of Service and potential code execution via use-after-free vulnerability (CVE-2026-23884)
* freerdp: FreeRDP: Heap buffer overflow leads to denial of service and potential code execution (CVE-2026-23533)
* freerdp: FreeRDP: Heap buffer overflow via crafted RDPGFX surface updates leads to denial of service and potential code execution. (CVE-2026-23531)
* freerdp: FreeRDP: Denial of Service and potential code execution via client-side heap buffer overflow (CVE-2026-23532)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
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"text": "2430877"
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"category": "description",
"text": "A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol. This vulnerability occurs because the `freerdp_bitmap_decompress_planar` function does not properly validate bitmap dimensions when decompressing planar bitmap data. A malicious server can exploit this by sending specially crafted bitmap data, leading to a client-side heap buffer overflow. This can cause a crash (Denial of Service) and potentially allow for arbitrary code execution on the client system.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "freerdp: FreeRDP: Heap buffer overflow leading to denial of service and potential code execution from a malicious server.",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "For this vulnerability to be exploited, a client must connect to a maliciously-configured server. Red Hat recommends that FreeRDP clients are only used to connect to trusted servers.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-23530"
},
{
"category": "external",
"summary": "RHBZ#2430877",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2430877"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-23530",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23530"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-23530",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23530"
},
{
"category": "external",
"summary": "https://github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbcec279033f8394468/libfreerdp/codec/planar.c#L1689-L1696",
"url": "https://github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbcec279033f8394468/libfreerdp/codec/planar.c#L1689-L1696"
},
{
"category": "external",
"summary": "https://github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbcec279033f8394468/libfreerdp/codec/planar.c#L1713-L1716",
"url": "https://github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbcec279033f8394468/libfreerdp/codec/planar.c#L1713-L1716"
},
{
"category": "external",
"summary": "https://github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbcec279033f8394468/libfreerdp/codec/planar.c#L951-L953",
"url": "https://github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbcec279033f8394468/libfreerdp/codec/planar.c#L951-L953"
},
{
"category": "external",
"summary": "https://github.com/FreeRDP/FreeRDP/releases/tag/3.21.0",
"url": "https://github.com/FreeRDP/FreeRDP/releases/tag/3.21.0"
},
{
"category": "external",
"summary": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-r4hv-852m-fq7p",
"url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-r4hv-852m-fq7p"
}
],
"release_date": "2026-01-19T16:58:46.712000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-02-16T11:45:27+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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},
"url": "https://access.redhat.com/errata/RHSA-2026:2714"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.6,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H",
"version": "3.1"
},
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"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "freerdp: FreeRDP: Heap buffer overflow leading to denial of service and potential code execution from a malicious server."
},
{
"cve": "CVE-2026-23531",
"cwe": {
"id": "CWE-122",
"name": "Heap-based Buffer Overflow"
},
"discovery_date": "2026-01-19T18:01:53.381528+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2430887"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in FreeRDP. A malicious server can exploit an out-of-bounds read/write vulnerability in the ClearCodec component by sending crafted RDPGFX surface updates. This can trigger a client-side heap buffer overflow, leading to a crash (Denial of Service (DoS)) and potential heap corruption with a risk of arbitrary code execution. For this vulnerability to be exploited, a client must connect to a maliciously-configured server.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "freerdp: FreeRDP: Heap buffer overflow via crafted RDPGFX surface updates leads to denial of service and potential code execution.",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "For this vulnerability to be exploited, a client must connect to a maliciously-configured server. Red Hat recommends that FreeRDP clients are only used to connect to trusted servers.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-23531"
},
{
"category": "external",
"summary": "RHBZ#2430887",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2430887"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-23531",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23531"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-23531",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23531"
},
{
"category": "external",
"summary": "https://github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbcec279033f8394468/libfreerdp/codec/clear.c#L1139-L1145",
"url": "https://github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbcec279033f8394468/libfreerdp/codec/clear.c#L1139-L1145"
},
{
"category": "external",
"summary": "https://github.com/FreeRDP/FreeRDP/releases/tag/3.21.0",
"url": "https://github.com/FreeRDP/FreeRDP/releases/tag/3.21.0"
},
{
"category": "external",
"summary": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-xj5h-9cr5-23c5",
"url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-xj5h-9cr5-23c5"
}
],
"release_date": "2026-01-19T17:01:01.380000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-02-16T11:45:27+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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{
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"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.6,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H",
"version": "3.1"
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{
"category": "impact",
"details": "Important"
}
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"title": "freerdp: FreeRDP: Heap buffer overflow via crafted RDPGFX surface updates leads to denial of service and potential code execution."
},
{
"cve": "CVE-2026-23532",
"cwe": {
"id": "CWE-122",
"name": "Heap-based Buffer Overflow"
},
"discovery_date": "2026-01-19T18:02:13.669594+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2430891"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in FreeRDP. A malicious server can exploit a client-side heap buffer overflow vulnerability in the `gdi_SurfaceToSurface` path. This vulnerability, caused by a mismatch in memory handling, can lead to a crash (Denial of Service) of the client application. Furthermore, it carries a risk of heap corruption, which could potentially enable arbitrary code execution on the affected system.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "freerdp: FreeRDP: Denial of Service and potential code execution via client-side heap buffer overflow",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "For this vulnerability to be exploited, a client must connect to a maliciously-configured server. Red Hat recommends that FreeRDP clients are only used to connect to trusted servers.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-23532"
},
{
"category": "external",
"summary": "RHBZ#2430891",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2430891"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-23532",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23532"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-23532",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23532"
},
{
"category": "external",
"summary": "https://github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbcec279033f8394468/libfreerdp/gdi/gfx.c#L1368-L1382",
"url": "https://github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbcec279033f8394468/libfreerdp/gdi/gfx.c#L1368-L1382"
},
{
"category": "external",
"summary": "https://github.com/FreeRDP/FreeRDP/releases/tag/3.21.0",
"url": "https://github.com/FreeRDP/FreeRDP/releases/tag/3.21.0"
},
{
"category": "external",
"summary": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-fq8c-87hj-7gvr",
"url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-fq8c-87hj-7gvr"
}
],
"release_date": "2026-01-19T17:03:51.328000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-02-16T11:45:27+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.6,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H",
"version": "3.1"
},
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"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "freerdp: FreeRDP: Denial of Service and potential code execution via client-side heap buffer overflow"
},
{
"cve": "CVE-2026-23533",
"cwe": {
"id": "CWE-122",
"name": "Heap-based Buffer Overflow"
},
"discovery_date": "2026-01-19T18:01:48.107161+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2430886"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol. A malicious server can exploit a client-side heap buffer overflow vulnerability in the RDPGFX ClearCodec decode path. This occurs when maliciously crafted residual data causes out-of-bounds writes during color output. Successful exploitation can lead to a crash, resulting in a Denial of Service (DoS), and potentially heap corruption with a risk of arbitrary code execution.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "freerdp: FreeRDP: Heap buffer overflow leads to denial of service and potential code execution",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "For this vulnerability to be exploited, a client must connect to a maliciously-configured server. Red Hat recommends that FreeRDP clients are only used to connect to trusted servers.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-23533"
},
{
"category": "external",
"summary": "RHBZ#2430886",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2430886"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-23533",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23533"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-23533",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23533"
},
{
"category": "external",
"summary": "https://github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbcec279033f8394468/libfreerdp/codec/clear.c#L268-L281",
"url": "https://github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbcec279033f8394468/libfreerdp/codec/clear.c#L268-L281"
},
{
"category": "external",
"summary": "https://github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbcec279033f8394468/libfreerdp/codec/clear.c#L336",
"url": "https://github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbcec279033f8394468/libfreerdp/codec/clear.c#L336"
},
{
"category": "external",
"summary": "https://github.com/FreeRDP/FreeRDP/releases/tag/3.21.0",
"url": "https://github.com/FreeRDP/FreeRDP/releases/tag/3.21.0"
},
{
"category": "external",
"summary": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-32q9-m5qr-9j2v",
"url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-32q9-m5qr-9j2v"
}
],
"release_date": "2026-01-19T17:07:18.283000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-02-16T11:45:27+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.6,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H",
"version": "3.1"
},
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{
"category": "impact",
"details": "Important"
}
],
"title": "freerdp: FreeRDP: Heap buffer overflow leads to denial of service and potential code execution"
},
{
"cve": "CVE-2026-23884",
"cwe": {
"id": "CWE-416",
"name": "Use After Free"
},
"discovery_date": "2026-01-19T18:01:13.693621+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2430880"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol. A malicious server can exploit this vulnerability when a client connects to it. Specifically, offscreen bitmap deletion can lead to a use-after-free (UAF) condition, where the client attempts to use memory that has already been deallocated. This can cause a crash, resulting in a Denial of Service (DoS), and potentially lead to heap corruption with a risk of arbitrary code execution.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "freerdp: FreeRDP: Denial of Service and potential code execution via use-after-free vulnerability",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "For this vulnerability to be exploited, a client must connect to a maliciously-configured server. Red Hat recommends that FreeRDP clients are only used to connect to trusted servers.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-23884"
},
{
"category": "external",
"summary": "RHBZ#2430880",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2430880"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-23884",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23884"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-23884",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23884"
},
{
"category": "external",
"summary": "https://github.com/FreeRDP/FreeRDP/blob/3370e30e92a021eb680892dda14d642bc8b8727c/libfreerdp/cache/offscreen.c#L114-L122",
"url": "https://github.com/FreeRDP/FreeRDP/blob/3370e30e92a021eb680892dda14d642bc8b8727c/libfreerdp/cache/offscreen.c#L114-L122"
},
{
"category": "external",
"summary": "https://github.com/FreeRDP/FreeRDP/blob/3370e30e92a021eb680892dda14d642bc8b8727c/libfreerdp/cache/offscreen.c#L87-L91",
"url": "https://github.com/FreeRDP/FreeRDP/blob/3370e30e92a021eb680892dda14d642bc8b8727c/libfreerdp/cache/offscreen.c#L87-L91"
},
{
"category": "external",
"summary": "https://github.com/FreeRDP/FreeRDP/releases/tag/3.21.0",
"url": "https://github.com/FreeRDP/FreeRDP/releases/tag/3.21.0"
},
{
"category": "external",
"summary": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-cfgj-vc84-f3pp",
"url": "https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-cfgj-vc84-f3pp"
}
],
"release_date": "2026-01-19T17:20:40.149000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-02-16T11:45:27+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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"url": "https://access.redhat.com/errata/RHSA-2026:2714"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.6,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H",
"version": "3.1"
},
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]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "freerdp: FreeRDP: Denial of Service and potential code execution via use-after-free vulnerability"
}
]
}
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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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