Mitel Networks has released security updates to patch a critical-severity authentication bypass vulnerability impacting its MiVoice MX-ONE enterprise communications platform. MX-ONE is the company’s SIP-based communications system, which can scale to support hundreds of thousands of users. The critical security flaw is due to an improper access control weakness discovered in the MiVoice MX-ONE Provisioning
US nuclear weapons agency reportedly hacked in SharePoint attacks
Unknown threat actors have reportedly breached the National Nuclear Security Administration’s network in attacks exploiting a recently patched Microsoft SharePoint zero-day vulnerability chain. NNSA is a semi-autonomous U.S. government agency part of the Energy Department that maintains the country’s nuclear weapons stockpile and is also tasked with responding to nuclear and radiological emergencies within the
Cisco: Maximum-severity ISE RCE flaws now exploited in attacks
Cisco is warning that three recently patched critical remote code execution vulnerabilities in Cisco Identity Services Engine (ISE) are now being actively exploited in attacks. Although the vendor did not specify how they were being exploited and whether they were successful, applying the security updates as soon as possible is now critical. “In July 2025, the
Dior begins sending data breach notifications to U.S. customers
The House of Dior (Dior) is sending data breach notifications to U.S. customers informing them that a May cybersecurity incident compromised their personal information. Dior is a French luxury fashion house, part of the LVMH (Moët Hennessy Louis Vuitton) group, which is the world’s largest luxury conglomerate. The Dior brand alone generates an annual revenue of
Threat actors downgrade FIDO2 MFA auth in PoisonSeed phishing attack
A PoisonSeed phishing campaign is bypassing FIDO2 security key protections by abusing the cross-device sign-in feature in WebAuthn to trick users into approving login authentication requests from fake company portals. The PoisonSeed threat actors are known to employ large-volume phishing attacks for financial fraud. In the past, distributing emails containing crypto seed phrases used to drain cryptocurrency
Popular npm linter packages hijacked via phishing to drop malware
Popular JavaScript libraries were hijacked this week and turned into malware droppers, in a supply chain attack achieved via targeted phishing and credential theft. The npm package eslint-config-prettier, downloaded over 30 million times weekly, was compromised after its maintainer fell victim to a phishing attack. Another package eslint-plugin-prettier from the same maintainer was also targeted. The attacker(s) used
Citrix Bleed 2 exploited weeks before PoCs as Citrix denied attacks
A critical Citrix NetScaler vulnerability, tracked as CVE-2025-5777 and dubbed “CitrixBleed 2,” was actively exploited nearly two weeks before proof-of-concept (PoC) exploits were made public, despite Citrix stating that there was no evidence of attacks. GreyNoise has confirmed its honeypots detected targeted exploitation from IP addresses located in China on June 23, 2025. “GreyNoise has
Co-op confirms data of 6.5 million members stolen in cyberattack
UK retailer Co-op has confirmed that personal data of 6.5 million members was stolen in the massive cyberattack in April that shut down systems and caused food shortages in its grocery stores. Co-op (short for the Co-operative Group) is one of the United Kingdom’s largest consumer co-operatives, operating food stores, funeral services, insurance, and legal
Google fixes actively exploited sandbox escape zero day in Chrome
Google has released a security update for Chrome to address half a dozen vulnerabilities, one of them actively exploited by attackers to escape the browser’s sandbox protection. The vulnerability is identified as CVE-2025-6558 and received a high-severity rating of 8.8. It was discovered by researchers at Google’s Threat Analysis Group (TAG) on June 23. The security
UK launches vulnerability research program for external experts
UK’s National Cyber Security Centre (NCSC) has announced a new Vulnerability Research Initiative (VRI) that aims to strengthen relations with external cybersecurity experts. The agency already conducts internal vulnerability research on a wide range of technologies and will continue to do so. However, the launch of VRI will create a parallel program designed to improve