Tag: zero-day
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Fixes released for a serious Microsoft Office zero-day flaw
This article originally appeared on Computerworld. First seen on csoonline.com Jump to article: www.csoonline.com/article/4123146/fixes-released-for-a-serious-microsoft-office-zero-day-flaw-2.html
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Fortinet blocks exploited FortiCloud SSO zero day until patch is ready
Fortinet has confirmed a new, actively exploited critical FortiCloud single sign-on (SSO) authentication bypass vulnerability, tracked as CVE-2026-24858, and says it has mitigated the zero-day attacks by blocking FortiCloud SSO connections from devices running vulnerable firmware versions. First seen on bleepingcomputer.com Jump to article: www.bleepingcomputer.com/news/security/fortinet-blocks-exploited-forticloud-sso-zero-day-until-patch-is-ready/
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Microsoft Issues Emergency Patch for Active Office Zero-Day
Microsoft released an emergency Office patch to fix an actively exploited zero-day flaw that lets attackers bypass security via malicious files. The post Microsoft Issues Emergency Patch for Active Office Zero-Day appeared first on TechRepublic. First seen on techrepublic.com Jump to article: www.techrepublic.com/article/news-microsoft-office-zero-day-emergency-patch-january-2026/
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Microsoft Rushes Emergency Patch for Office Zero-Day
To exploit the vulnerability, an attacker would need either system access or be able to convince a user to open a malicious Office file. First seen on darkreading.com Jump to article: www.darkreading.com/vulnerabilities-threats/microsoft-rushes-emergency-patch-office-zero-day
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NDSS 2025 Detecting Ransomware Despite I/O Overhead: A Practical Multi-Staged Approach
Tags: attack, conference, cyber, detection, exploit, Internet, monitoring, network, phishing, ransomware, risk, windows, zero-daySession 10B: Ransomware Authors, Creators & Presenters: Christian van Sloun (RWTH Aachen University), Vincent Woeste (RWTH Aachen University), Konrad Wolsing (RWTH Aachen University & Fraunhofer FKIE), Jan Pennekamp (RWTH Aachen University), Klaus Wehrle (RWTH Aachen University) PAPER Detecting Ransomware Despite I/O Overhead: A Practical Multi-Staged Approach Ransomware attacks have become one of the most widely…
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Microsoft Issues Emergency Patch for Active Office Zero-Day
Microsoft issued an emergency patch for an actively exploited Microsoft Office zero-day enabling code execution. First seen on esecurityplanet.com Jump to article: www.esecurityplanet.com/threats/microsoft-issues-emergency-patch-for-active-office-zero-day/
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Office zero-day exploited in the wild forces Microsoft OOB patch
Another actively abused Office bug, another emergency patch Office 2016 and 2019 users are left with registry tweaks instead of fixes. First seen on theregister.com Jump to article: www.theregister.com/2026/01/27/office_zeroday_exploited_in_the/
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Microsoft Releases Patch for Office Zero Day Amid Evidence of Exploitation
Microsoft urged customers running Microsoft Office 2016 and 2019 to apply the patch to be protected First seen on infosecurity-magazine.com Jump to article: www.infosecurity-magazine.com/news/microsoft-patch-office-zero-day/
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Microsoft reveals actively exploited Office zero-day, provides emergency fix (CVE-2026-21509)
Microsoft released emergency Office security updates to fix a security feature bypass vulnerability (CVE-2026-21509) that its threat intelligence and security teams spotted … First seen on helpnetsecurity.com Jump to article: www.helpnetsecurity.com/2026/01/27/microsoft-reveals-actively-exploited-office-zero-day-provides-emergency-fix-cve-2026-21509/
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Microsoft bringt Notfallpatch: Office-Nutzer werden über Zero-Day-Lücke attackiert
Eine gefährliche Sicherheitslücke betrifft alle gängigen Office-Versionen. Angesichts der aktiven Ausnutzung sollten Anwender zügig patchen. First seen on golem.de Jump to article: www.golem.de/news/microsoft-bringt-notfallpatch-office-nutzer-werden-ueber-zero-day-luecke-attackiert-2601-204646.html
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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…