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CVE-2025-32756: Fortinet Multiple Products Stack-Based Buffer Overflow Vulnerability

criticalknown exploitedpublic exploitCVE-2025-32756
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 FortiFone, FortiVoice, FortiNDR and FortiMail contain a stack-based overflow vulnerability that may allow a remote unauthenticated attacker to execute arbitrary code or commands via crafted HTTP requests.

CSIRTS triage

vendor: FortinetMemory corruptionaffected: FortiFone, FortiVoice, FortiNDR, FortiMail
What
A stack-based buffer overflow vulnerability may allow remote unauthenticated attackers to execute arbitrary code.
Who is affected
Users of the affected Fortinet products with the vulnerable versions deployed.
Urgency
Immediate action is required due to active exploitation and critical severity.
Action
Patch all affected Fortinet products to the latest version.

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

Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2025-05-14
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2025-32756

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-2025-32756coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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

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