Latest cybersecurity reporting from selected sources.

NightmareEclipse Says Mitigation Can Exhaust Disk Space, Crash AppsMicrosoft's patch for CVE-2026-50656, known as RoguePlanet, has sparked fresh criticism after researcher NightmareEclipse alleged the mitigation can exhaust disk space, crash applications and leak memory, extending a months-long dispute over Microsoft's handling of multiple zero-day disclosures.

Mitigation: SSO Access Restricted After Attackers Compromised Fully Patched DevicesNetwork security giant Fortinet locked out cloud customers from its single sign-on service until they update device firmware with a patch against active attacks exploiting an improper access control zero day. Only Fortinet devices running the latest, patched firmware versions can use Fortinet SSO.

Security Experts Advise Immediate Patching; Zero-Day Attacks Began Last MonthAffiliates of Russian-speaking ransomware operation Medusa began targeting a zero-day vulnerability in widely used Fortra GoAnywhere Managed File Transfer software one week before the vendor issued a security alert, patch and mitigation instructions for the flaw, say security experts.

Cisco is urging customers to patch two security flaws impacting the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software, which it said have been exploited in the wild

Apple has patched a zero-day vulnerability being exploited in targeted attacks

Factory resets and apply patches is the advice amid fortnight delay for other appliances The cybersecurity industry is urging those in charge of defending their orgs to take mitigation efforts "seriously" as Ivanti battles two dangerous new vulnerabilities, one of which was already being exploited as a zero-day.…

The second zero-day vulnerability found in Windows NTLM in the past two months paves the way for relay attacks and credential theft. Microsoft has no patch, but released updated NTLM cyberattack mitigation advice.

US Agencies Told to Remove Ivanti's Affected Products From Federal NetworksThe U.S. Cybersecurity and Infrastructure Security Agency directed federal agencies to implement mitigation measures for two zero-day exploits that affect Ivanti’s popular VPN products while they await a patch, in what one official described as "a rapidly evolving situation."

Patches will be available in late January and February, but until then, customers must take mitigation measures.

Microsoft's Patch Tuesday update for the month of October has addressed a total of 85 security vulnerabilities, including fixes for an actively exploited zero-day flaw in the wild

While organizations wait for an official patch for the two zero-day flaws in Microsoft Exchange, they should scan their networks for signs of exploitation and apply these mitigations.