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CVE-2024-21762: Fortinet FortiOS Out-of-Bound Write Vulnerability

criticalknown exploitedpublic exploitCVE-2024-21762
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.
Fortinet FortiOS contains an out-of-bound write vulnerability that allows a remote unauthenticated attacker to execute code or commands via specially crafted HTTP requests.

CSIRTS triage

vendor: Fortinetproduct: FortiOSRemote code execution
What
An out-of-bound write vulnerability allows a remote unauthenticated attacker to execute code via specially crafted HTTP requests.
Who is affected
Deployments of Fortinet FortiOS are affected.
Urgency
Remediation is urgent due to active exploitation and critical severity.
Action
Update FortiOS to the latest version to mitigate the vulnerability.

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

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2024-02-09
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2024-21762

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-2024-21762coverage & 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 Out-of-Bound

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.

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