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CVE-2026-20316 is a hard-coded credential vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software. Static credentials for a built-in, low-privileged account allow a remote attacker without prior authorization to authenticate and access sensitive data available to that account. The vulnerability can be combined with other FMC vulnerabilities to escalate privileges and has been exploited in the wild.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
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.
219 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A previously disclosed Cisco vulnerability in the same class as CVE-2026-20332 that has been exploited in the wild since August.
An exploited Cisco Secure Firewall Management Center vulnerability mentioned alongside CVE-2026-20079.
Vulnérabilité de Cisco Secure Firewall Management Center mentionnée comme contexte connexe; le contenu indique une exploitation par des acteurs malveillants mais ne fournit pas de détails techniques supplémentaires.
A Cisco Secure Firewall Management Center (FMC) flaw that enables attackers with a low-privilege account to access sensitive data and can be chained with other FMC vulnerabilities for privilege escalation.
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.