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CVE-2025-53521 was initially disclosed in October as a high-severity denial-of-service (DoS) flaw, but new information has revealed the bug is actually much more dangerous.
CVE-2025-53521 was initially disclosed in October as a high-severity denial-of-service (DoS) flaw, but new information has revealed the bug is actually much more dangerous.
F5 Revises Severity of Flaw Disclosed Last YearFlaws in major application delivery and security platforms and VPN gateways are being actively exploited or targeted. Under fire: a vulnerability in F5 BIG-IP Access Policy Manager can facilitate remote code execution, and a "memory overread" flaw in NetScaler Application Delivery Controller.
Internet security nonprofit Shadowserver Foundation has found more than 266,000 F5 BIG-IP instances exposed online after the security breach disclosed by cybersecurity company F5 this week. [...]
F5 disclosed a breach this week that included zero-day bugs, source code, and some customer information.
U.S. cybersecurity company F5 on Wednesday disclosed that unidentified threat actors broke into its systems and stole files containing some of BIG-IP's source code and information related to undisclosed vulnerabilities in the product
U.S. cybersecurity company F5 disclosed that nation-state hackers breached its systems and stole undisclosed BIG-IP security vulnerabilities and source code. [...]
Sprague Replaces Veteran CEO, Plans to Double Down on PTaaS and AI Red TeamingHackerOne has tapped F5's longtime product leader as it next chief executive to continue expanding its portfolio beyond operating vulnerability disclosure programs. The firm tasked Kara Sprague with building on existing growth in areas including AI red teaming and penetration testing as a service.
F5 is warning BIG-IP admins that devices are being breached by "skilled" hackers exploiting two recently disclosed vulnerabilities to erase signs of their access and achieve stealthy code execution. [...]
F5 is warning of active abuse of a critical security flaw in BIG-IP less than a week after its public disclosure that could result in the execution of arbitrary system commands as part of an exploit chain
Multiple security vulnerabilities have been disclosed in F5 BIG-IP and BIG-IQ devices that, if successfully exploited, to completely compromise affected systems
EnemyBot, a botnet based on code from multiple malware pieces, is expanding its reach by quickly adding exploits for recently disclosed critical vulnerabilities in web servers, content management systems, IoT, and Android devices. [...]
EnemyBot, a botnet based on code from multiple malware pieces, is expanding its reach by quickly adding exploits for recently disclosed critical vulnerabilities in web servers, content management systems, IoT, and Android devices. [...]
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added the recently disclosed F5 BIG-IP flaw to its Known Exploited Vulnerabilities Catalog following reports of active abuse in the wild
A recently disclosed F5 BIG-IP vulnerability has been used in destructive attacks, attempting to erase a device's file system and make the server unusable. [...]
A recently disclosed F5 BIG-IP vulnerability has been used in destructive attacks, attempting to erase a device's file system and make the server unusable. [...]
Security researchers are warning F5 BIG-IP admins to immediately install the latest security updates after creating exploits for a recently disclosed critical CVE-2022-1388 remote code execution vulnerability. [...]