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Cisco FMC static credentials exploited by attackers (CVE-2026-20316)

Feeds2.Feedburner •Zeljka Zorz • July 30, 2026

A static credentials vulnerability (CVE-2026-20316) in Cisco Secure Firewall Management Center (FMC), a platform for centrally managing multiple Cisco Secure Firewall devices across a network, is being leveraged by attackers, CISA warned. Two FMC flaws, one indicator of compromise CVE-2026-20316, reported by Jimi Sebree of Horizon3.ai, is found in the FMC software’s web interface. The static user credentials are for a low-privileged account, and they can be used by attackers to log in to an … More →

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Cisco FMC Static Credential Vulnerability Under Active Exploitation Cisco has reported a high-severity vulnerability (CVE-2026-20316) in its Secure Firewall Management Center (FMC) software, which is being actively exploited in the wild. The flaw arises from hardcoded static credentials for a low-privileged account, allowing unauthenticated remote attackers to log in and access sensitive data. Despite a CVSS score of 5.3, Cisco has assigned a High severity rating due to the potential for privilege escalation when combined with other vulnerabilities. The Cybersecurity and Infrastructure Security Agency (CISA) has added this vulnerability to its Known Exploited Vulnerabilities catalog. Cisco has released hotfixes for several affected software versions, urging immediate installation. The vulnerability affects all configurations of Cisco Secure FMC Software but does not impact Cloud-Delivered FMC or other firewall software. Administrators are advised to check logs for indicators of compromise and to contact Cisco's Technical Assistance Center for recovery assistance. The vulnerability was first disclosed on July 29, 2026. 27 sources 72

Extracted Entities

Cisco FMC static credentials exploited by attackers (CVE-2026-20316)

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Extracted Entities

CVEs (1)

CWE Weaknesses (1)

MITRE ATT&CK (1)