Fortinet has confirmed that attackers are actively bypassing a December patch for a critical FortiCloud single sign-on (SSO) authentication flaw after customers reported suspicious logins on devices supposedly fully up to date.
In a new advisory, Fortinet said it had identified a fresh attack path being used to abuse SAML-based SSO in FortiOS, even on systems that had already applied the vendor’s earlier fix. The disclosure follows reports earlier this week that FortiGate firewalls were quietly reconfigured via compromised SSO accounts, with attackers altering firewall settings, creating backdoor admin users, and exfiltrating configuration files.
Read more…
Source: The Register
Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox
Related:
- Malicious Microsoft VSCode AI extensions might have hit over 1.5 million users
January 26, 2026
More than 1.5 million people may have had their sensitive data exfiltrated to Chinese hackers through two malicious extensions found on the VSCode Marketplace. Security researchers at Koi Security said they discovered two malicious browser extensions in Microsoft’s Visual Studio Code (VSCode) Marketplace, the official Microsoft store for code editor add-ons. The extensions were advertised as ...
- Fortinet admits FortiGate SSO bug still exploitable despite December patch
January 23, 2026
Fortinet has confirmed that attackers are actively bypassing a December patch for a critical FortiCloud single sign-on (SSO) authentication flaw after customers reported suspicious logins on devices supposedly fully up to date. In a new advisory, Fortinet said it had identified a fresh attack path being used to abuse SAML-based SSO in FortiOS, even on systems ...
- Researchers say Russian government hackers were behind attempted Poland power outage
January 23, 2026
A failed December effort to bring down parts of Poland’s energy grid was the work of Russian government hackers known for causing past energy disruptions, according to a security research firm that investigated the incident. Last week, Polish Energy Minister Milosz Motyka told reporters that the attempted cyberattack on December 29 and 30 saw hackers targeting ...
- VMware vCenter Server bug fixed in 2024 under attack today
January 23, 2026
You’ve got to keep your software updated. Some unknown miscreants are exploiting a critical VMware vCenter Server bug more than a year after Broadcom patched the flaw. The vulnerability, tracked as CVE-2024-37079, is an out-of-bounds write flaw in vCenter Server’s implementation of the DCERPC protocol that earned a 9.8 out of 10 CVSS rating. In other ...
- Data of 72 million Under Armour customers appears on the dark web
January 22, 2026
When reports first emerged in November 2025 that sportswear giant Under Armour had been hit by the Everest ransomware group, the story sounded depressingly familiar: a big brand, a huge trove of data, and a lot of unanswered questions. Since then, the narrative around what actually happened has split into two competing versions—cautious corporate statements on ...
- The Next Frontier of Runtime Assembly Attacks: Leveraging LLMs to Generate Phishing JavaScript in Real Time
January 22, 2026
Imagine visiting a webpage that looks perfectly safe. It has no malicious code, no suspicious links. Yet, within seconds, it transforms into a personalized phishing page. This isn’t merely an illusion. It’s the next frontier of web attacks where attackers use generative AI (GenAI) to build a threat that’s loaded after the victim has already visited ...