CVE-2025-54820: Fortinet FortiManager · Execute Unauthorized Code or Commands
Affects Fortinet FortiManagerSource CVE Database V5
Public exploit available · CVSS 7.0 High.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.8% chance of exploitation in 30 days – higher than 59% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:RExploitation evidence
Disclosed: evidence found.
CVE published 10 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
CVSS exploit maturity: proof of concept public
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| FortinetFortiManager | Affected
| Fixed in– |
AI-suggested
Organizations should immediately assess their FortiManager deployments to identify affected versions (6.4.0, 7.2.0 through 7.2.10, and 7.4.0 through 7.4.2). Until official patches are released by Fortinet, implement network-level mitigations such as restricting access to FortiManager management interfaces to trusted IP addresses only, using VPNs or dedicated management networks. Enable strict firewall rules to block unauthorized inbound traffic to FortiManager services. Monitor network traffic and logs for unusual or malformed requests targeting FortiManager. Employ intrusion detection/prevention systems (IDS/IPS) with updated signatures to detect exploitation attempts. Regularly check Fortinet’s security advisories for patches and apply them promptly once available. Consider deploying application-layer firewalls or reverse proxies to filter and sanitize incoming requests. Conduct internal penetration testing and vulnerability scanning to verify mitigation effectiveness. Educate security teams about this vulnerability to ensure rapid incident response capability.
Description
A Stack-based Buffer Overflow vulnerability [CWE-121] vulnerability in Fortinet FortiManager 7.4.0 through 7.4.2, FortiManager 7.2.0 through 7.2.10, FortiManager 6.4 all versions may allow a remote unauthenticated attacker to execute unauthorized commands via crafted requests, if the service is enabled. The success of the attack depends on the ability to bypass the stack protection mechanisms.