CSIRTS // UNIFIED SECURITY ADVISORY FEEDSYS ● ONLINE · POWERED BY INTELFUSIONS.COM

← Back to feed

CVE-2022-42475: Fortinet FortiOS Heap-Based Buffer Overflow Vulnerability

criticalknown exploitedpublic exploitCVE-2022-42475
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
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.

CSIRTS triage

vendor: Fortinetproduct: FortiOSRemote code execution
What
A heap-based buffer overflow vulnerability can allow an unauthenticated, remote attacker to execute arbitrary code via crafted requests.
Who is affected
Users of multiple versions of Fortinet FortiOS SSL-VPN.
Urgency
Immediate remediation is necessary due to the critical nature and exploitation status of the vulnerability.
Action
Update FortiOS to the latest version.

AI-assisted analysis generated from the source advisory — verify against the original.

⚡ Watch FortiOS

Get an email when a new FortiOS advisory drops — max one per day, one-click unsubscribe.

Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2022-12-13
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2022-42475

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2022-42475coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for Fortinet FortiOS Heap-Based

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from CISA Known Exploited Vulnerabilities