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CVE-2026-19868 can let attackers holding credentials for a different login method get past SAML checks, including SAML-enforced MFA.

The emergency package comes after dozens of companies and government agencies were hit by unauthorized access to their systems and leaks of client data, prompting uneasiness across Japan.

Noteworthy stories that might have slipped under the radar: Synology warns about NAS ransomware attacks, Flowise ‘hello’ attacks, Chainalysis breach impact expands.

Hackers created an account on an internal system and accessed names, email addresses, phone numbers, and business addresses.

Rated Critical for cybersecurity, OpenAI’s new model beats GPT-5.6 Cyber at exploitation while staying in scope more reliably.

The recommendations come amid attacks targeting fridges and freezers in supermarkets and blood banks in Europe.

The October incident will cut fourth-quarter sales by up to €250 million and has led Ahold Delhaize to lower its 2026 outlook.

In a month, 28 residential proxy services used 6 addresses, mainly between 5 p.m. and midnight, Eastern Time.

On Linux distributions using musl libc without PAM, some accounts accept any password between 257 and 1024 characters.

After its sandbox proxy failed, an internal OpenAI model crafted raw packets and probed AWS services trying to reach the internet.

The trio, who have nicknames that include “Rocky Balboa,” “Superman Cash” and “Fat Boy,” often targeted the companies’ accounting departments.

An unreleased OpenAI cyber model found and exploited 948 distinct Linux kernel privilege escalation bugs for about $1.2 million.

More than 200 sites were seen serving phishing content to first-time visitors but not to those who revisit.

SonicWall vulnerability SonicWall vulnerability

CVE-2026-19868 can let attackers holding credentials for a different login method get past SAML checks, including SAML-enforced MFA.

OpenAI GPT models OpenAI GPT models

Rated Critical for cybersecurity, OpenAI’s new model beats GPT-5.6 Cyber at exploitation while staying in scope more reliably.

White House cybersecurity White House cybersecurity

In a month, 28 residential proxy services used 6 addresses, mainly between 5 p.m. and midnight, Eastern Time.

Top Cybersecurity Headlines

On Linux distributions using musl libc without PAM, some accounts accept any password between 257 and 1024 characters.

An unreleased OpenAI cyber model found and exploited 948 distinct Linux kernel privilege escalation bugs for about $1.2 million.

Tracked as CVE-2026-107441, the out-of-bounds write flaw could allow attackers to execute OS commands via crafted HTTP requests.

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The 2026 Virtual CISO Forum brings together CISOs, senior cybersecurity executives, practitioners, industry experts, and other security leaders to share practical experience and examine the issues shaping enterprise cybersecurity strategy.
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SecurityWeek’s CISO Forum 2026 Year-End Virtual Roundtable will reflect on a landmark year in security and discuss how to fortify your enterprise strategy for 2027.
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Vulnerabilities

Cybercrime

Researchers from Proofpoint say they recently discovered a rogue app store that lets iOS device users download apps from a catalog offering more than 1 million apps, without having to jailbreak their device.

While investigating activity associated with the RIG exploit kit, researchers at Cisco managed to cause some damage to an operation, but an uncooperative service provider prevented them from completely shutting it down.

The first security advisory published by VMware in 2016 describes an important guest privilege escalation vulnerability in VMware Tools.VMware Tools includes utilities designed to enhance the performance of the virtual machine (VM) guest operating system and improve VM management.

Many financial organizations in the UK are failing to properly configure SSL (Secure Sockets Layer) certificate security of their websites, putting user’s information at risk, researchers have discovered.

Romanian law enforcement authorities assisted by Europol this week arrested eight individuals suspected of being part of an international group that used malware to steal money from ATMs.

Time Warner Cable said on Wednesday that it had been contacted by the FBI who notified the cable TV and Internet service provider that its customers’ email addresses including account passwords may have been compromised.

Starting on January 1, 2016, Firefox 43 began rejecting new SSL certificates that use the SHA-1 cryptographic hash function, but the latest version of the browser (43.0.4) no longer does that.

The developers of the WordPress content management system (CMS) have released a security and maintenance update to address a vulnerability and dozens of non-security issues.

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