Tag: zero-day
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Emergency Microsoft update fixes inwild Office zero-day
Microsoft issued emergency updates to fix an actively exploited Office zero-day, CVE-2026-21509, affecting Office 20162024 and Microsoft 365 Apps. Microsoft released out-of-band security updates to address an actively exploited Office zero-day vulnerability tracked as CVE-2026-21509. The issue is a security feature bypass vulnerability that affects multiple Office versions, including Microsoft Office 2016, Microsoft Office 2019,…
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Microsoft patches actively exploited Office zero-day vulnerability
Microsoft has released emergency security updates to patch a high-severity Office zero-day vulnerability exploited in attacks. First seen on bleepingcomputer.com Jump to article: www.bleepingcomputer.com/news/microsoft/microsoft-patches-actively-exploited-office-zero-day-vulnerability/
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NetSupport Manager 0-Day Vulnerabilities Enable Remote Code Execution
Two critical 0-day vulnerabilities in NetSupport Manager that, when chained, allow unauthenticated remote code execution (RCE). The vulnerabilities were discovered during routine security assessments of operational technology (OT) environments and affect version 14.10.4.0 and earlier, with fixes implemented in version 14.12.0000 released on July 29th, 2025. The two vulnerabilities tracked as CVE-2025-34164 and CVE-2025-34165 reside…
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Fortinet confirms new zero-day attacks against customer devices
cloud-init@mail.io and cloud-noc@mail.io. Other admin accounts are created with the names: audit, backup, itadmin, secadmin, and support. Mitigation: If these or other IOCs such as IP addresses are identified in configurations or the device logs, the system and its configuration should be considered compromised. Fortinet recommends updating the device to the latest available software release,…
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Exploited Zero-Day Flaw in Cisco UC Could Affect Millions
Mass scanning is underway for CVE-2026-20045, which Cisco tagged as critical because successful exploitation could lead to a complete system takeover. First seen on darkreading.com Jump to article: www.darkreading.com/endpoint-security/exploited-zero-day-flaw-cisco-uc-affect-millions
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76 Zero-Day Vulnerabilities Exposed at Pwn2Own Automotive 2026 by Hackers
The final day of Pwn2Own Automotive 2026 brought the world’s elite security researchers to the finish line with a spectacular display of hacking prowess. Over three intense days of competition, researchers successfully identified and exploited 76 unique zero-day vulnerabilities across automotive systems, claiming a combined prize pool of $1,047,000 USD. The competition crowned Tobias Scharnowski,…
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Hackers get $1,047,000 for 76 zero-days at Pwn2Own Automotive 2026
Pwn2Own Automotive 2026 has ended with security researchers earning $1,047,000 after exploiting 76 zero-day vulnerabilities between January 21 and January 23. First seen on bleepingcomputer.com Jump to article: www.bleepingcomputer.com/news/security/hackers-get-1-047-000-for-76-zero-days-at-pwn2own-automotive-2026/
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Mit Sicherheitslücken in Autos: Pwn2Own-Hacker gewinnen 1.047.000 US-Dollar
Bei der Pwn2Own Automotive in Tokio wurden mit 76 verschiedenen Zero-Day-Lücken mehrere E-Auto-Lader und Infotainmentsysteme gehackt. First seen on golem.de Jump to article: www.golem.de/news/mit-sicherheitsluecken-in-autos-pwn2own-hacker-gewinnen-1-047-000-us-dollar-2601-204542.html
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Pwn2Own Automotive 2026: Researchers Score $516,500 For 37 Unique Zero-Days
Day Two of Pwn2Own Automotive 2026 kicked off with high intensity, as security researchers targeted automotive infotainment systems, EV chargers, and gateways. Building on Day One’s momentum, teams demonstrated 37 unique zero-day vulnerabilities, earning over $516,500 in bounties. The Zero Day Initiative (ZDI) event highlights critical flaws in vehicle tech, from command injections to buffer…
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Zero-Day Flaw in Cisco Unified Communications Being Targeted
Vendor Ships Emergency Fixes, Warning Flaw Facilitates Full System Compromise. Attackers are targeting a zero-day vulnerability in Cisco’s Unified Communications and Webex products that facilitates remote code execution and root-level access to the underlying operating system, risking full system compromise. Cisco has released patches, warning that no workarounds exist. First seen on govinfosecurity.com Jump to…
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Cisco Unified CM Zero-Day RCE Under Attack, CISA Issues Warning
Tags: attack, cisa, cisco, communications, cve, cyber, exploit, flaw, kev, rce, remote-code-execution, service, vulnerability, zero-dayCISA has added CVE-2026-20045, a critical zero-day remote code execution (RCE) vulnerability in Cisco Unified Communications Manager (Unified CM), to its Known Exploited Vulnerabilities (KEV) catalog. Added on January 21, 2026, this flaw affects multiple Cisco Unified Communications products, including Unified CM, Unified CM Session Management Edition (SME), Unified CM IM & Presence Service, Cisco…
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Hackers exploit 29 zero-days on second day of Pwn2Own Automotive
Hackers collect $439,250 after exploiting 29 zero-day vulnerabilities on the second day of Pwn2Own Automotive 2026. First seen on bleepingcomputer.com Jump to article: www.bleepingcomputer.com/news/security/hackers-exploit-29-zero-day-vulnerabilities-on-second-day-of-pwn2own-automotive/
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Zero-Day Exploits Surge, Nearly 30% of Flaws Attacked Before Disclosure
VulnCheck analysts found that vulnerabilities exploited before being publicly disclosed rose from 23.6% in 2024 to 28.96% in 2025 First seen on infosecurity-magazine.com Jump to article: www.infosecurity-magazine.com/news/zeroday-exploits-surge-vulncheck/
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Dringend patchen: Hacker attackieren Cisco-Tools über Zero-Day-Lücke
Admins sollten zügig handeln. In mehreren Cisco-Produkten klafft eine gefährliche Sicherheitslücke. Erste Attacken wurden bereits beobachtet. First seen on golem.de Jump to article: www.golem.de/news/unified-cm-und-mehr-hacker-attackieren-cisco-systeme-ueber-zero-day-luecke-2601-204499.html
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Unified CM und mehr: Hacker attackieren Cisco-Systeme über Zero-Day-Lücke
Admins sollten zügig handeln. In mehreren Cisco-Produkten klafft eine gefährliche Sicherheitslücke. Erste Attacken wurden bereits beobachtet. First seen on golem.de Jump to article: www.golem.de/news/unified-cm-und-mehr-hacker-attackieren-cisco-systeme-ueber-zero-day-luecke-2601-204499.html
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Another week, another emergency patch as Cisco plugs Unified Comms zero-day
The critical-rated flaw leaves unpatched systems open to full takeover First seen on theregister.com Jump to article: www.theregister.com/2026/01/22/another_week_another_emergency_patch/
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Cisco Unified Communications Zero-Day RCE Flaw Actively Exploited For Root Shell Access
Tags: access, cisco, communications, cve, cyber, exploit, flaw, rce, remote-code-execution, service, vulnerability, zero-dayCisco has warned customers of a critical zero-day vulnerability affecting several of its Unified Communications products, including Cisco Unified Communications Manager (Unified CM), Unified Communications Manager Session Management Edition (Unified CM SME), Unified Communications Manager IM & Presence Service (IM&P), Cisco Unity Connection, and Cisco Webex Calling Dedicated Instance. Tracked as CVE-2026-20045, the vulnerability carries…
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Zero-Day-Lücke in SAP NetWeaver – Von der Lücke zur Welle: Was CVE-2025-31324 über ERP-Exploits verrät
First seen on security-insider.de Jump to article: www.security-insider.de/cve-2025-31324-sap-netweaver-exploit-welle-a-9c97284841d692acc3069a5864c52c5b/
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China-Linked APT Exploited Sitecore Zero-Day in Critical Infrastructure Intrusion
A threat actor likely aligned with China has been observed targeting critical infrastructure sectors in North America since at least last year.Cisco Talos, which is tracking the activity under the name UAT-8837, assessed it to be a China-nexus advanced persistent threat (APT) actor with medium confidence based on tactical overlaps with other campaigns mounted by…
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U.S. CISA adds a flaw in Cisco Unified Communications products to its Known Exploited Vulnerabilities catalog
Tags: cisa, cisco, communications, cve, cybersecurity, exploit, flaw, infrastructure, kev, vulnerability, zero-dayThe U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds a flaw impacting Cisco Unified Communications products to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added a Cisco Unified Communications products vulnerability, tracked as CVE-2026-20045 (CVSS score of 8.2), to its Known Exploited Vulnerabilities (KEV) catalog. This week, Cisco patched a critical zero-day…
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Tesla hacked, 37 zero-days demoed at Pwn2Own Automotive 2026
Tags: zero-daySecurity researchers have hacked the Tesla Infotainment System and earned $516,500 after exploiting 37 zero-days on the first day of the Pwn2Own Automotive 2026 competition. First seen on bleepingcomputer.com Jump to article: www.bleepingcomputer.com/news/security/tesla-hacked-37-zero-days-demoed-at-pwn2own-automotive-2026/
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Cloudflare Zero-Day Let Attackers Bypass WAF via ACME Certificate Validation Path
A critical zero-day vulnerability in Cloudflare exposed a fundamental weakness in how security exceptions are handled at scale. The flaw allowed attackers to bypass Cloudflare’s Web Application Firewall (WAF) entirely and directly access protected origin servers by abusing a certificate validation endpoint. The issue was not caused by customer misconfiguration, but by a logic error…
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New Study Finds GPT-5.2 Can Reliably Develop Zero-Day Exploits at Scale
Advanced large language models can autonomously develop working exploits for zero-day vulnerabilities, marking a significant shift in the offensive cybersecurity landscape. The research demonstrates that artificial intelligence systems can now perform complex exploit development tasks that previously required specialized human expertise. The agents were challenged to develop exploits under realistic constraints, including modern security mitigations,…
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Attackers Rerouted Employee Pay Without Breaching IT Systems
An unnamed organization recently discovered that several employees’ paychecks had silently vanished not because of a ransomware attack, data-wiping malware, or a cloud breach, but because an attacker convinced people to do exactly what they wanted. Instead of hacking through firewalls or exploiting zero-days, the threat actor went after the weakest link: operational processes and…
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SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 80
Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape Malware Newsletter Gogs 0-Day Exploited in the Wild SHADOW#REACTOR Text-Only Staging, .NET Reactor, and In-Memory Remcos RAT Deployment >>Untrustworthy Fund<<: targeted UAC-0190 cyberattacks against SOU using PLUGGYAPE (CERT-UA#19092) Hiding in Plain Sight: Deconstructing the Multi-Actor […]…
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Cisco finally fixes AsyncOS zero-day exploited since November
Cisco finally patched a maximum-severity AsyncOS zero-day exploited in attacks targeting Secure Email Gateway (SEG) appliances since November 2025. First seen on bleepingcomputer.com Jump to article: www.bleepingcomputer.com/news/security/cisco-finally-fixes-asyncos-zero-day-exploited-since-november/
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China-Linked APT Exploits Sitecore Zero-Day in Attacks on American Critical Infrastructure
A threat actor likely aligned with China has been observed targeting critical infrastructure sectors in North America since at least last year.Cisco Talos, which is tracking the activity under the name UAT-8837, assessed it to be a China-nexus advanced persistent threat (APT) actor with medium confidence based on tactical overlaps with other campaigns mounted by…
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Cisco Patches Zero-Day RCE Exploited by China-Linked APT in Secure Email Gateways
Cisco on Thursday released security updates for a maximum-severity security flaw impacting Cisco AsyncOS Software for Cisco Secure Email Gateway and Cisco Secure Email and Web Manager, nearly a month after the company disclosed that it had been exploited as a zero-day by a China-nexus advanced persistent threat (APT) actor codenamed UAT-9686.The vulnerability, tracked as…
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Zero-Day Threat: UAT-8837 Targets North American Infrastructure
The post Zero-Day Threat: UAT-8837 Targets North American Infrastructure appeared first on Daily CyberSecurity. First seen on securityonline.info Jump to article: securityonline.info/zero-day-threat-uat-8837-targets-north-american-infrastructure/