Fortinet Multiple Products Stack-Based Buffer Overflow Vulnerability (CVE-2025-32756)
Severity: critical · Patch status: unknown · Since 2025-05-14 · CVE-2025-32756
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. CISA added CVE-2025-32756 to its Known Exploited Vulnerabilities catalog on May 14, 2025, which means attackers are exploiting it in the wild.
What to do
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- US federal agencies must remediate by Jun 4, 2025 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch
