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CVE-2025-25249 is a heap-based buffer overflow in the cw_acd daemon that processes CAPWAP control traffic in Fortinet FortiOS, FortiSwitchManager, and affected FortiSASE deployments. A remote unauthenticated attacker can send specially crafted CAPWAP packets or requests to execute arbitrary code or commands. Affected releases include FortiOS 7.6.0–7.6.3, 7.4.0–7.4.8, 7.2.0–7.2.11, 7.0.0–7.0.17, and all 6.4 releases, plus FortiSwitchManager 7.2.0–7.2.6 and 7.0.0–7.0.5.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
98 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An unauthenticated heap-based buffer-overflow vulnerability in FortiOS and FortiSwitchManager that can enable command execution via crafted requests. It was reportedly exploited in real-world operations after patches were released.
Fortinet FortiOS and FortiSwitchManager heap-based buffer overflow vulnerability. Fortinet issued security updates for affected releases.
Pre-authentication heap-based buffer overflow in the Fortinet cw_acd CAPWAP-processing daemon. Crafted CAPWAP traffic can corrupt heap memory, hijack control flow, and yield high-privilege remote code execution on affected appliances.
A critical heap-based buffer overflow (CWE-122/CWE-787) in Fortinet FortiOS, FortiSwitchManager, and FortiSASE that can allow attackers to execute unauthorized code or commands via specially crafted packets. CISA confirmed active exploitation and added it to the KEV catalog on September 9, 2026.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.