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CVE-2026-20316 is a use-of-hard-coded-password vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software. The issue is caused by static credentials associated with a built-in low-privileged account. An unauthenticated remote attacker can use those credentials to authenticate to an affected FMC instance over the network and obtain access equivalent to that low-privileged user. Successful exploitation exposes sensitive information available through the management platform. Cisco assessed the security impact as High despite the moderate CVSS base score because the foothold can be combined with other Cisco Secure FMC vulnerabilities to achieve further privilege escalation. Active exploitation was confirmed in July 2026.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
165 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Cisco Secure Firewall Management Center vulnerability listed among vulnerabilities actively exploited or operationally weaponized in July 2026.
A vulnerability in Cisco Secure Firewall Management Center (FMC) Software that could allow a low-privilege account to access sensitive data within affected systems.
A static credential vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) that allows an unauthenticated remote attacker to log in with a low-privilege account and access sensitive data on the device.
A static-credentials vulnerability in Cisco Secure Firewall Management Center that allows an unauthenticated remote attacker to log in with embedded low-privilege credentials and access sensitive data; it is significant because Cisco confirmed active zero-day exploitation.
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.