CVE-2025-25256
97Vexday Risk Score
Patch now. It exploitation observed by VulnCheck and has a working public exploit.
ssvc Actcvss 9.8epss 60%
from disclosure to weapon3 days
Published on NVDAug 12
1st PoC+3d
VulnCheckAug 12
exploitation probability
60%top 1% of all CVEs
observed exploitation
yesVulnCheck
2 public exploit(s)
An improper neutralization of special elements used in an OS command ('OS Command Injection') vulnerability [CWE-78] vulnerability in Fortinet FortiSIEM 7.3.0 through 7.3.1, FortiSIEM 7.2.0 through 7.2.5, FortiSIEM 7.1.0 through 7.1.7, FortiSIEM 7.0.0 through 7.0.3, FortiSIEM 6.7.0 through 6.7.9, FortiSIEM 6.6 all versions, FortiSIEM 6.5 all versions, FortiSIEM 6.4 all versions, FortiSIEM 6.3 all versions, FortiSIEM 6.2 all versions, FortiSIEM 6.1 all versions, FortiSIEM 5.4 all versions, FortiSIEM 5.3 all versions, FortiSIEM 5.2 all versions, FortiSIEM 5.1 all versions, FortiSIEM 5.0 all versions, FortiSIEM 4.10 all versions, FortiSIEM 4.9 all versions, FortiSIEM 4.7 all versions allows an unauthenticated attacker to execute unauthorized code or commands via crafted CLI requests.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C
Affected products
Fortinet · FortiSIEMpublic PoCs found — 2
cve_referencegithub.com/watchtowrlabs/watchTowr-vs-FortiSIEM-CVE-2025-25256★ 19vulncheckvulncheck.com/xdb/1b21103b8502unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://fortiguard.fortinet.com/psirt/FG-IR-25-152https://github.com/watchtowrlabs/watchTowr-vs-FortiSIEM-CVE-2025-25256https://labs.watchtowr.com/should-security-solutions-be-secure-maybe-were-all-wrong-fortinet-fortisiem-pre-auth-command-injection-cve-2025-25256/https://www.theregister.com/2025/08/13/fortinet_discloses_critical_bug/