Cisco FMC static-credential flaw actively exploited
A Cisco Firewall Management Center vulnerability exploiting static credentials is being actively exploited, exposing data and bypassing security policy.
Sourcecert.ssi.gouv.fr — open the original
What to check
- Applies to
- The 1 CVE named below. Whether you run an affected version is not assessed: check the versions the source lists.
- Exploitation
- CISA lists CVE-2026-20316 as exploited in the wild.
CERT-FR issued an advisory regarding CVE-2026-20316, a vulnerability affecting Cisco Firewall Management Center (FMC) across multiple version branches (7.0.x, 7.2.x, 7.4.x, 7.6.x, 7.7.x, and 10.0.x). The flaw stems from static credentials and allows an attacker to compromise data confidentiality and bypass the security policy enforced by the product.
Cisco has confirmed that this vulnerability is being actively exploited in the wild, per its security advisory cisco-sa-fmc-static-cred-BET3Cjh published July 29, 2026. Given that FMC is a central management platform for Cisco firewall deployments, exploitation could grant attackers unauthorized access or the ability to weaken security policies across managed firewall infrastructure. Affected organizations should apply the vendor-provided hotfixes for their respective FMC version as a priority.
Mentioned in this report
Source reporting: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0950
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