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CVE-2022-42475

Fortinet — Fortinet FortiOS Heap-Based Buffer Overflow Vulnerability

Fortinet · CWE-197 | CWE-787 — Out-of-bounds write · in CISA KEV since 2022-12-13

ExigentKEV since 2022 · listed over a yearRansomwareCISA KEVActively Exploited
94

EVRS 94 of 100 Immediate

Out-of-Band / Urgent Remediation

Rank 65 of 2,960 tracked

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Why it scores 94

Evidence available: 6 of 7 signals

Listed in the CISA KEV catalog, and associated with known ransomware campaigns.

  • CISA KEVApplied
  • RansomwareApplied
  • Vendor exploitationDid not apply
  • EPSSApplied
  • Microsoft Exploitability IndexNot applicable
  • Pre-patch disclosureNo data
  • KEV recencyDid not apply
  • CVSSApplied

The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data

Fix

Patch or fixed version identified

CISA required action

Fixed in

fortios: update to a version newer than 5.0.14 | fortios: update to a version newer than 5.2.15 | fortios: update to a version newer than 5.4.13 | fortios: update to a version newer than 5.6.14 | fortios: update to 6.0.16 or later | fortios: update to 6.2.12 or later

Affected versions

  • fortiproxy>= 1.0.0 <= 1.0.7>= 1.1.0 <= 1.1.6>= 1.2.0 <= 1.2.13>= 2.0.0 < 2.0.12>= 7.0.0 < 7.0.8>= 7.2.0 < 7.2.2
  • fortios>= 5.0.0 <= 5.0.14>= 5.2.0 <= 5.2.15>= 5.4.0 <= 5.4.13>= 5.6.0 <= 5.6.14>= 6.0.0 < 6.0.16>= 6.2.0 < 6.2.12>= 6.4.0 < 6.4.11>= 7.0.0 < 7.0.9>= 7.2.0 < 7.2.3>= 6.0.0 < 6.0.15>= 6.4.0 < 6.4.10>= 7.0.0 < 7.0.8
  • fim-7901e
  • fim-7904e
  • fim-7910e
  • fim-7920e
  • fim-7921f
  • fim-7941f

+15 more affected products; see the full list at NVD.

Remediation

Apply updates per vendor instructions.

Fixed versions from NVD.

Evidence

Each value with its source
MeasureValueSource
CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. 9.8 NVD
FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. 0.995 (99.94th pctl) FIRST EPSS
Actively exploitedWhether a source of record has confirmed attacks using it in the wild. Confirmed CISA KEV
Ransomware campaign useWhether CISA has seen ransomware operators use it. Known CISA KEV
CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. 2023-01-03 · KEV since 2022 · listed over a year CISA KEV
Public exploit moduleA module existing is not the same as active exploitation. None known Metasploit
EUVD cross-referenceENISA's record: CVSS 9.3 (v3.1), assigned by fortinet. Listed ENISA EUVD

Description

NVD

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.

What CISA says to do