CVE-2025-64155
An improper neutralization of special elements used in an os command ('os command injection') vulnerability in Fortinet FortiSIEM 7.4.0, FortiSIEM 7.3.0 through 7.3.4, FortiSIEM 7.1.0 through 7.1.8, FortiSIEM 7.0.0 through 7.0.4, FortiSIEM 6.7.0 through…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 43.6%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
An improper neutralization of special elements used in an os command ('os command injection') vulnerability in Fortinet FortiSIEM 7.4.0, FortiSIEM 7.3.0 through 7.3.4, FortiSIEM 7.1.0 through 7.1.8, FortiSIEM 7.0.0 through 7.0.4, FortiSIEM 6.7.0 through 6.7.10 may allow an attacker to execute unauthorized code or commands via crafted TCP requests.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 43.60% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-78
- Affected
- fortinet/fortisiem
- Source
- psirt@fortinet.com
EPSS moved from 42.8% on 24 September 2026 to 43.6% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- https://fortiguard.fortinet.com/psirt/FG-IR-25-772Vendor Advisory
- https://github.com/horizon3ai/CVE-2025-64155Exploit, Third Party Advisory
- https://github.com/purehate/CVE-2025-64155-hunter
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.