CVE-2022-42475 (GCVE-0-2022-42475)
Vulnerability from cvelistv5 – Published: 2023-01-02 08:18 – Updated: 2025-10-21 23:15Summary
A heap-based buffer overflow vulnerability [CWE-122] in FortiOS SSL-VPN 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.10, 6.2.0 through 6.2.11, 6.0.15 and earlier and FortiProxy SSL-VPN 7.2.0 through 7.2.1, 7.0.7 and earlier may allow a remote unauthenticated attacker to execute arbitrary code or commands via specifically crafted requests.
Severity
9.3 (Critical)
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-23 13:26 UTC
CWE
- CWE-197 - Execute unauthorized code or commands
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://fortiguard.com/psirt/FG-IR-22-398 | |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Fortinet | FortiProxy |
Affected:
7.2.0 , ≤ 7.2.1
(semver)
Affected: 7.0.0 , ≤ 7.0.7 (semver) Affected: 2.0.0 , ≤ 2.0.11 (semver) Affected: 1.2.0 , ≤ 1.2.13 (semver) Affected: 1.1.0 , ≤ 1.1.6 (semver) Affected: 1.0.0 , ≤ 1.0.7 (semver) |
guessed | |
| Fortinet | FortiOS |
Affected:
7.2.0 , ≤ 7.2.2
(semver)
Affected: 7.0.0 , ≤ 7.0.8 (semver) Affected: 6.4.0 , ≤ 6.4.10 (semver) Affected: 6.2.0 , ≤ 6.2.11 (semver) Affected: 6.0.0 , ≤ 6.0.15 (semver) Affected: 5.6.0 , ≤ 5.6.14 (semver) Affected: 5.4.0 , ≤ 5.4.13 (semver) Affected: 5.2.0 , ≤ 5.2.15 (semver) Affected: 5.0.0 , ≤ 5.0.14 (semver) |
guessed |
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: d6bacbf8-707f-4ef7-84c3-17c25fc76591
Exploited: Yes
Timestamps
First Seen: 2022-12-13
Asserted: 2022-12-13
Scope
Notes: KEV entry: Fortinet FortiOS Heap-Based Buffer Overflow Vulnerability | Affected: Fortinet / FortiOS | Description: Multiple versions of Fortinet FortiOS SSL-VPN contain a heap-based buffer overflow vulnerability which can allow an unauthenticated, remote attacker to execute arbitrary code or commands via specifically crafted requests. | Required action: Apply updates per vendor instructions. | Due date: 2023-01-03 | Known ransomware campaign use (KEV): Known | Notes (KEV): https://www.fortiguard.com/psirt/FG-IR-22-398; https://nvd.nist.gov/vuln/detail/CVE-2022-42475
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-197 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | FortiOS |
| Due Date | 2023-01-03 |
| Date Added | 2022-12-13 |
| Vendorproject | Fortinet |
| Vulnerabilityname | Fortinet FortiOS Heap-Based Buffer Overflow Vulnerability |
| Knownransomwarecampaignuse | Known |
References
Created: 2026-02-02 12:27 UTC
| Updated: 2026-02-06 07:17 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 89030af9-3cd4-458c-9784-464cb30694d2
Exploited: Yes
Timestamps
First Seen: 2022-12-13
Asserted: 2022-12-13
Scope
Notes: KEVIntel entry: A heap-based buffer overflow vulnerability [CWE-122] in FortiOS SSL-VPN 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.10, 6.2.0... | Affected: Fortinet / FortiProxy, FortiOS | CVSS: 9.3 (CRITICAL) | Used in malware: yes | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Confirmed Compromise
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | A heap-based buffer overflow vulnerability [CWE-122] in FortiOS SSL-VPN 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.10, 6.2.0... |
| Vendor | Fortinet |
| Product | FortiProxy, FortiOS |
| Added Date | 2022-12-13T00:00:00.000Z |
| Cvss Score | 9.3 |
| Epss Score | None |
| Cvss Severity | CRITICAL |
| Epss Percentile | None |
| Used In Malware | yes |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | False |
References
Created: 2026-06-23 14:05 UTC
| Updated: 2026-07-10 06:14 UTC
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],
"source": "psirt@fortinet.com",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-787"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2026-03-27T11:56:27+00:00",
"cve": "CVE-2022-42475",
"id": "CVE-2022-42475",
"initial_release_date": "2022-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "CVE-2022-42475",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-42475.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T13:10:40.927Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"name": "https://fortiguard.com/psirt/FG-IR-22-398",
"tags": [
"x_transferred"
],
"url": "https://fortiguard.com/psirt/FG-IR-22-398"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2022-42475",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-10-23T13:26:56.926267Z",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2022-12-13",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-42475"
},
"type": "kev"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-10-23T13:27:20.290Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"government-resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-42475"
}
],
"timeline": [
{
"lang": "en",
"time": "2022-12-13T00:00:00.000Z",
"value": "CVE-2022-42475 added to CISA KEV"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "FortiProxy",
"vendor": "Fortinet",
"versions": [
{
"lessThanOrEqual": "7.2.1",
"status": "affected",
"version": "7.2.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.0.7",
"status": "affected",
"version": "7.0.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "2.0.11",
"status": "affected",
"version": "2.0.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "1.2.13",
"status": "affected",
"version": "1.2.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "1.1.6",
"status": "affected",
"version": "1.1.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "1.0.7",
"status": "affected",
"version": "1.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"product": "FortiOS",
"vendor": "Fortinet",
"versions": [
{
"lessThanOrEqual": "7.2.2",
"status": "affected",
"version": "7.2.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.0.8",
"status": "affected",
"version": "7.0.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.4.10",
"status": "affected",
"version": "6.4.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.2.11",
"status": "affected",
"version": "6.2.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.0.15",
"status": "affected",
"version": "6.0.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.6.14",
"status": "affected",
"version": "5.6.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.13",
"status": "affected",
"version": "5.4.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.2.15",
"status": "affected",
"version": "5.2.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.0.14",
"status": "affected",
"version": "5.0.0",
"versionType": "semver"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A heap-based buffer overflow vulnerability [CWE-122]\u00a0in FortiOS SSL-VPN 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.10, 6.2.0 through 6.2.11, 6.0.15 and earlier and FortiProxy SSL-VPN 7.2.0 through 7.2.1, 7.0.7 and earlier may allow a remote unauthenticated attacker to execute arbitrary code or commands via specifically crafted requests."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-197",
"description": "Execute unauthorized code or commands",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2023-01-02T08:18:49.444Z",
"orgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8",
"shortName": "fortinet"
},
"references": [
{
"name": "https://fortiguard.com/psirt/FG-IR-22-398",
"url": "https://fortiguard.com/psirt/FG-IR-22-398"
}
],
"solutions": [
{
"lang": "en",
"value": "Please upgrade to FortiOS version 7.2.3 or above\r\nPlease upgrade to FortiOS version 7.0.9 or above\r\nPlease upgrade to FortiOS version 6.4.11 or above\r\nPlease upgrade to FortiOS version 6.2.12 or above\r\nPlease upgrade to FortiOS version 6.0.16 or above\r\nPlease upgrade to upcoming FortiOS-6K7K version 7.0.8 or above\r\nPlease upgrade to FortiOS-6K7K version 6.4.10 or above\r\nPlease upgrade to FortiOS-6K7K version 6.2.12 or above\r\nPlease upgrade to FortiOS-6K7K version 6.0.15 or above\r\nPlease upgrade to FortiProxy version 7.2.2 or above\r\nPlease upgrade to FortiProxy version 7.0.8 or above\r\nPlease upgrade to upcoming FortiProxy version 2.0.12 or above"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8",
"assignerShortName": "fortinet",
"cveId": "CVE-2022-42475",
"datePublished": "2023-01-02T08:18:49.444Z",
"dateReserved": "2022-10-07T14:05:36.301Z",
"dateUpdated": "2025-10-21T23:15:29.105Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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