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F5 has released security updates to address two critical security flaws in NGINX Open Source that could be exploited to achieve code execution on affected systems
F5 released emergency updates for critical NGINX flaws (CVE-2026-42530, CVE-2026-42055) that could enable unauthenticated code execution. F5 has issued out-of-band patches for multiple NGINX vulnerabilities, including two critical flaws, respectively tracked as CVE-2026-42530 and CVE-2026-42055 (CVSS 9.2). The bugs affect HTTP modules and can be exploited remotely without authentication to trigger memory corruption, potentially causing […]
Cybersecurity company F5 has released out-of-band security updates to address multiple NGINX web server vulnerabilities, including two critical-severity flaws that could allow attackers to execute code on vulnerable systems. [...]
Internet security watchdog Shadowserver has found over 14,000 BIG-IP APM instances exposed online amid ongoing attacks exploiting a critical-severity remote code execution (RCE) vulnerability. [...]
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.
F5 has reclassified a BIG-IP APM denial-of-service (DoS) vulnerability as a critical-severity remote code execution (RCE) flaw, warning that attackers are exploiting it to deploy webshells on unpatched devices. [...]
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday added a critical security flaw impacting F5 BIG-IP Access Policy Manager (APM) to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation
Concerns Grow Over F5 Hacking Amid Stalled Government ShutdownFederal officials are scrambling to contain nation-state hackers exploiting stolen source code from networking devices and software maker F5 amid staffing pressures created by the ongoing government shutdown. Stolen files reportedly include undisclosed vulnerabilities F5 had been researching.
F5 has admitted a nation state actor has stolen source code and information on undisclosed vulnerabilities
Federal Agencies Ordered to Patch or Decommission F5 Devices Amid Imminent RiskAn advanced nation-state threat actor stole sensitive F5 source code and vulnerability data to craft tailored exploits, prompting an emergency directive amid a U.S. government shutdown that has left cyber defenses strained and federal networks at "imminent risk."
Cybersecurity company F5 has released security updates to address BIG-IP vulnerabilities stolen in a breach detected on August 9, 2025. [...]
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. [...]
Also, phishing's easier over the phone, and your F5 cookies might be unencrypted, and more in brief If you need an excuse to improve your patching habits, a joint advisory from the US and UK governments about a massive, ongoing Russian campaign exploiting known vulnerabilities should do the trick.…
Agency Says Cookies Could Help Attackers Find Network Assets, VulnerabilitiesUnencrypted cookies tied to a suite of secure gateway technology from F5 are gateways for hackers to reach internal devices on corporate networks, warns the Cybersecurity and Infrastructure Security Agency. BIG-IP uses persistent cookies as a traffic load-balancing convenience.
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.
Two security vulnerabilities have been discovered in F5 Next Central Manager that could be exploited by a threat actor to seize control of the devices and create hidden rogue administrator accounts for persistence
Researchers Discover Major Vulnerabilities in Popular Central Management PlatformResearchers identified major security vulnerabilities in F5's Next Central Manager that could allow hackers to gain a persistent, undetectable presence within any organization's network infrastructure connected to F5 assets, according to a Wednesday report.