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Background for this topic.
F5 provides application-delivery technology, best known in security operations for BIG-IP appliances and software that load-balance traffic, terminate TLS, route requests, and can enforce web-application firewall, access-control, and denial-of-service protections. F5’s NGINX products are also used as reverse proxies and web servers. These components sit in front of applications, mediating internet traffic and trust boundaries.
Their privileged position makes exposed management interfaces, insecure configurations, leaked certificates or keys, and unpatched vulnerabilities especially significant: compromise can enable traffic interception, authentication bypass, request manipulation, or access to protected applications, depending on deployment. Security teams should inventory BIG-IP and NGINX instances and versions, restrict management planes, apply vendor fixes, review iRules, WAF, and access policies, and monitor administrative and anomalous proxy activity. During incidents, preserve configuration and traffic logs and assess whether TLS credentials or backend routes were exposed.
Weekly headline count for the current query.
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.
Conduent Gets Sued; US Government's Cyber Shutdown Woes; Hacktivist Hits RiseThe latest ISMG Editors' Panel tackles: post-hack legal fallout for Conduent after it suffered the year's biggest health data breach, the U.S. government's shutdown complicating its response to the breach of vendor F5 and the rise in attacks targeting Western critical national infrastructure.
Officials Say Major Staffing Cuts and Furloughs Undercut Response to F5 CyberattackCurrent and former federal officials tell Information Security Media Group furloughs and leadership gaps across the federal cyber ecosystem have hindered the U.S. government's ability to coordinate response efforts after a nation-state actor exploited flaws in F5’s BIG-IP systems amid the shutdown.
Also: F5 Revenue Dips, Swedish Utility Operator BreachedThis week, critical infrastructure breaches in Canada, a Swedish grid operator breached, an Australian guilty of selling cyber exploits, Gmail wasn't breached, F5 projected a revenue dip, PhantomRaven targeted developers, a Pakistan-linked actor targeted India and Dentsu confirmed a data breach.
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.
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."
Calypso’s Red-Teaming and Agentic Threat Tools Boost F5’s Application Security EdgeF5’s latest acquisition brings Dublin, Ireland-based CalypsoAI’s unique AI security stack into its platform to secure application traffic against LLM misuse, data leakage and shadow AI, enhancing protection for hybrid and multi-cloud environments and helping secure apps and APIs.
Context-Driven Insights, Automation Fuel Faster, Clearer Decisions for Cyber TeamsWith its acquisition of San Francisco-based startup Fletch, F5 is embedding agentic AI into its security platform to automate threat detection and response. The technology provides real-time context, filters irrelevant alerts and helps security teams prioritize urgent risks and mitigation tasks.
HHS Alerts on Scattered Spider, Living of the Land, Miracle Exploit, F5 AttacksFederal authorities are warning the healthcare sector of an array of cyberthreats - including Scattered Spider hacks, living-off-the-land attacks, and bad actors looking to exploit weaknesses such as F5 misconfigurations and also so-called "Miracle Exploit" flaws in some Oracle software.
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.
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.
UNC5174 Exploited F5 BIG-IP and ScreenConnect VulnerabilitiesA likely Chinese hacker-for-hire used high-profile vulnerabilities in a campaign targeting a slew of Southeast Asian and U.S. governmental and research organizations, says threat intel firm Mandiant. Rapid exploitation of newly patched flaws has become a hallmark of Chinese threat actors.