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Tag: BIGIP

Attackers Exploit RCE Flaw as 14,000 F5 BIG-IP APM Instances Remain Exposed

Over 14,000 F5 BIG-IP APM instances remain exposed online, as attackers actively exploit a critical remote code execution flaw CVE-2025-53521. Over 14,000 F5 BIG-IP APM instances remain exposed online, with attackers actively exploiting the critical remote code execution vulnerability CVE-2025-53521 (CVSS ver. 3.1 score of 9.8), the nonprofit security organization Shadowserver warns. The vulnerability in BIG-IP…

5-month-old F5 BIG-IP DoS bug becomes critical RCE exploited in the wild

A vulnerability misclassified five months ago as a denial-of-service issue in F5 BIG-IP Access Policy Manager (APM) turned out to be a critical pre-authentication remote code execution flaw that is now under active exploitation. Hackers are using it to deploy a persistent malware program that runs with root privileges. The CVE-2025-53521 vulnerability was first disclosed…

Attackers are exploiting RCE vulnerability in BIG-IP APM systems (CVE-2025-53521)

A critical unauthenticated remote code execution vulnerability (CVE-2025-53521) in F5’s BIG-IP Access Policy Manager (APM) solution is under active exploitation, the US Cybersecurity and Infrastructure Security Agency warned on Friday. CISA added the flaw to its Known Exploited Vulnerabilities catalog after F5 updated the related security advisory, The advisory wasinitially published on October 15, 2025,…

U.S. CISA adds a flaw in F5 BIG-IP AMP to its Known Exploited Vulnerabilities catalog

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds a flaw in F5 BIG-IP AMP to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added a flaw in F5 BIG-IP AMP, tracked as CVE-2025-53521 (CVSS ver. 3.1 score of 9.8), to its Known Exploited Vulnerabilities (KEV) catalog. The vulnerability in BIG-IP APM allows…