Zero-day

Google Chrome / Chromium V8 ✓Patched

September 9 2026 Chrome 153 patched CVE-2026-87491, a V8 out-of-bounds write Google said was exploited in the wild — the seventh Chrome zero-day of 2026. Fixed in 153.0.8010.36/.37. CISA KEV listed.

Google Chrome / Chromium V8 ✓Patched

September 4 2026 Chrome update patched CVE-2026-85046, a V8 type confusion zero-day Google said was exploited in the wild. Fixed in Chrome 152.0.7977.82/.83. Later added to CISA KEV.

Google Chrome / Chromium V8 ✓Patched

June 2026 Chrome emergency update patched CVE-2026-11645, an out-of-bounds read/write in V8 exploited in the wild (fifth Chrome zero-day of 2026 at the time). Stable builds 149.0.7827.102/.103.

Google Chrome / Chromium Dawn ✓Patched

April 2026 Chrome patch for CVE-2026-5281, a use-after-free in Dawn (WebGPU), actively exploited in the wild.

Google Chrome / Chromium ✓Patched

March 2026 Chrome updates fixed two actively exploited zero-days: CVE-2026-3909 (out-of-bounds write in Skia) and CVE-2026-3910 (inappropriate implementation in V8).

Google Chrome / Chromium ✓Patched

First actively exploited Chrome zero-day of 2026. Google patched CVE-2026-2441, a high-severity use-after-free in CSS (CSSFontFeatureValuesMap), in mid-February Chrome 145 updates. Google stated an exploit existed in the wild.

Cisco Catalyst SD-WAN Manager / controllers ✓Patched

In February 2026 CISA issued an emergency directive after exploitation of critical authentication-bypass and related flaws in Cisco Catalyst SD-WAN Manager/controllers. Cisco Talos said related activity dated back years; unauthenticated attackers could gain administrative privileges on exposed controllers.

Ivanti EPMM deployments (EU institutions) ✓Patched

February 2026: European Commission and Dutch DPA/Judicial Council confirmed breaches through critical Ivanti Endpoint Manager Mobile zero-days. Dutch incident exposed work contact data; Commission said it contained its breach within nine hours.

Singapore major telecom providers ◐Partly patched

In February 2026 Singapore’s CSA revealed China-linked UNC3886 had breached all four major telecom providers in a months-long espionage campaign using zero-days and rootkits. Singapore ran operation CYBER GUARDIAN to evict the actors.

SAP NetWeaver Visual Composer ✓Patched

A CVSS 10 missing-authorization flaw in the NetWeaver Visual Composer Metadata Uploader let anyone POST JSP webshells to /developmentserver/metadatauploader. ReliaQuest found it while investigating compromises; SAP shipped an emergency fix on April 24, 2025.

Ivanti Connect Secure, Policy Secure, ZTA Gateways ✓Patched

An unauthenticated stack buffer overflow in Ivanti Connect Secure allowed remote code execution. Mandiant saw zero-day exploitation from mid-December 2024 and SPAWN-family malware (SPAWNANT, SPAWNMOLE, SPAWNSNAIL). CISA advised factory-resetting compromised appliances before restoring them on 22.7R2.5 or later.

Cleo Multiple Products ✓Patched

Two unauthenticated file-write bugs in Cleo Harmony, VLTrader and LexiCom managed file transfer software (CVE-2024-50623 and CVE-2024-55956) were mass-exploited in December 2024 to plant a Java backdoor and steal data. Huntress saw exploitation from 2024-12-03 against systems already patched to 5.8.0.21; Cleo shipped 5.8.0.24 for the second bug. The Clop ransomware gang claimed the attacks. Added to the CISA KEV catalog on 2024-12-13, 2024-12-17. CISA lists known use in ransomware campaigns.

Palo Alto Networks PAN-OS ✓Patched

CVE-2024-0012: Palo Alto Networks PAN-OS contains an authentication bypass vulnerability in the web-based management interface for several PAN-OS products, including firewalls and VPN concentrators. CVE-2024-9474: Palo Alto Networks PAN-OS contains an OS command injection vulnerability that allows for privilege escalation through the web-based management interface for several PAN products, including firewalls and VPN concentrators. Added to the CISA KEV catalog on 2024-11-18. CISA lists known use in ransomware campaigns.

Microsoft Windows ✓Patched

CVE-2024-43451: Microsoft Windows contains an NTLMv2 hash spoofing vulnerability that could result in disclosing a user's NTLMv2 hash to an attacker via a file open operation. The attacker could then leverage this hash to impersonate that user. CVE-2024-49039: Microsoft Windows Task Scheduler contains a privilege escalation vulnerability that can allow an attacker-provided, local application to escalate privileges outside of its AppContainer, and access privileged RPC functions. Added to the CISA KEV catalog on 2024-11-12. CISA lists known use in ransomware campaigns.

Fortinet FortiManager ✓Patched

Fortinet FortiManager contains a missing authentication vulnerability in the fgfmd daemon that allows a remote, unauthenticated attacker to execute arbitrary code or commands via specially crafted requests. Added to the CISA KEV catalog on 2024-10-23.

Microsoft Windows ✓Patched

CVE-2024-43572: Microsoft Windows Management Console contains unspecified vulnerability that allows for remote code execution. CVE-2024-43573: Microsoft Windows MSHTML Platform contains an unspecified spoofing vulnerability which can lead to a loss of confidentiality. Added to the CISA KEV catalog on 2024-10-08.

Ivanti Cloud Services Appliance / Cloud Services Appliance (CSA) ✓Patched

Four Ivanti Cloud Services Appliance (CSA) bugs were exploited in 2024: a command injection (CVE-2024-8190), a path traversal admin bypass (CVE-2024-8963), and later a SQL injection and another command injection (CVE-2024-9379, CVE-2024-9380). FortiGuard Incident Response found a suspected nation-state actor chaining them. CSA 4.6 was end-of-life; Ivanti urged upgrading to CSA 5.0. Added to the CISA KEV catalog on 2024-09-13, 2024-09-19, 2024-10-09.

Microsoft Publisher, Windows ✓Patched

CVE-2024-38014: Microsoft Windows Installer contains an improper privilege management vulnerability that could allow an attacker to gain SYSTEM privileges. CVE-2024-38217: Microsoft Windows Mark of the Web (MOTW) contains a protection mechanism failure vulnerability that allows an attacker to bypass MOTW-based defenses. This can result in a limited loss of integrity and availability of security features such as Protected View in Microsoft Office, which rely on MOTW tagging. CVE-2024-38226: Microsoft Publisher contains a protection mechanism failure vulnerability that allows attacker to bypass Office macro policies used to block untrusted or malicious files. Added to the CISA KEV catalog on 2024-09-10.

Microsoft Project, Windows ✓Patched

CVE-2024-38106: Microsoft Windows Kernel contains an unspecified vulnerability that allows for privilege escalation, enabling a local attacker to gain SYSTEM privileges. Successful exploitation of this vulnerability requires an attacker to win a race condition. CVE-2024-38107: Microsoft Windows Power Dependency Coordinator contains an unspecified vulnerability that allows for privilege escalation, enabling a local attacker to obtain SYSTEM privileges. CVE-2024-38178: Microsoft Windows Scripting Engine contains a memory corruption vulnerability that allows unauthenticated attacker to initiate remote code execution via a specially crafted URL. CVE-2024-38189: Microsoft Project contains an unspecified vulnerability that allows for remote code execution via a malicious file. CVE-2024-38193: Microsoft Windows Ancillary Function Driver for WinSock contains an unspecified vulnerability that allows for privilege escalation, enabling a local attacker to gain SYSTEM privileges. CVE-2024-38213: Microsoft Windows SmartScreen contains a security feature bypass vulnerability that allows an attacker to bypass the SmartScreen user experience via a malicious file. Added to the CISA KEV catalog on 2024-08-13.

Microsoft Windows ✓Patched

CVE-2024-38080: Microsoft Windows Hyper-V contains a privilege escalation vulnerability that allows a local attacker with user permissions to gain SYSTEM privileges. CVE-2024-38112: Microsoft Windows MSHTML Platform contains a spoofing vulnerability that has a high impact to confidentiality, integrity, and availability. Added to the CISA KEV catalog on 2024-07-09.

Microsoft DWM Core Library, Windows ✓Patched

CVE-2024-30040: Microsoft Windows MSHTML Platform contains an unspecified vulnerability that allows for a security feature bypass. CVE-2024-30051: Microsoft DWM Core Library contains a privilege escalation vulnerability that allows an attacker to gain SYSTEM privileges. Added to the CISA KEV catalog on 2024-05-14. CISA lists known use in ransomware campaigns.

Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) ✓Patched

Cisco Talos disclosed ArcaneDoor, a state-sponsored campaign against perimeter devices that exploited two Cisco Adaptive Security Appliance and Firepower Threat Defense zero-days: a denial of service (CVE-2024-20353) and a persistent local code execution bug (CVE-2024-20359), used to plant the Line Dancer and Line Runner implants. Added to the CISA KEV catalog on 2024-04-24.

Palo Alto Networks PAN-OS ✓Patched

A command injection in the GlobalProtect feature of PAN-OS let unauthenticated attackers run code as root on Palo Alto firewalls (CVSS 10). Volexity caught an actor it tracks as UTA0218, assessed as likely state-backed, exploiting it as a zero-day, and Palo Alto's Unit 42 tracked the activity as Operation MidnightEclipse. Hotfixes shipped from mid-April 2024. Added to the CISA KEV catalog on 2024-04-12. CISA lists known use in ransomware campaigns.

Microsoft Windows ✓Patched

CVE-2024-21351: Microsoft Windows SmartScreen contains a security feature bypass vulnerability that allows an attacker to bypass the SmartScreen user experience and inject code to potentially gain code execution, which could lead to some data exposure, lack of system availability, or both. CVE-2024-21412: Microsoft Windows Internet Shortcut Files contains an unspecified vulnerability that allows for a security feature bypass. Added to the CISA KEV catalog on 2024-02-13. CISA lists known use in ransomware campaigns.

Ivanti Connect Secure and Policy Secure / Connect Secure, Policy Secure, and Neurons ✓Patched

Two Ivanti Connect Secure and Policy Secure zero-days, an authentication bypass (CVE-2023-46805) and a command injection (CVE-2024-21887), were chained for unauthenticated remote code execution on internet-facing VPN gateways. Volexity found them in the wild in December 2023 and disclosed them on 2024-01-10. A third bug, an SSRF in the SAML component (CVE-2024-21893), was exploited later in January. CISA issued Emergency Directive 24-01 and then ordered federal agencies to disconnect all Ivanti Connect Secure and Policy Secure appliances. Added to the CISA KEV catalog on 2024-01-10, 2024-01-31. CISA lists known use in ransomware campaigns.

Atlassian Confluence Data Center and Server ✓Patched

A broken access control bug in publicly reachable Confluence Data Center and Server let outside attackers create Confluence administrator accounts. It was exploited as a zero-day, and Microsoft attributed it to the China-nexus Storm-0062. Atlassian Cloud was not affected.

libwebp (Google Chrome and everything that bundles libwebp) ✓Patched

A heap overflow in libwebp's lossless decoder, found by Apple SEAR and Citizen Lab after the BLASTPASS iPhone exploit, was exploited in the wild. Because libwebp is everywhere, browsers, Electron apps and image libraries that bundle it all had to ship updates.

Apple iOS, iPadOS, macOS and watchOS ✓Patched

Citizen Lab caught BLASTPASS, a zero-click iMessage exploit chain that delivered NSO Group's Pegasus through malicious PassKit attachments carrying images. Apple fixed the ImageIO and Wallet bugs in emergency updates the same day.

RARLAB WinRAR ✓Patched

WinRAR before 6.23 would run hidden code when a user opened what looked like a harmless file inside a ZIP. Group-IB found it exploited since April 2023 to target traders. After the fix, Google TAG saw Russian and Chinese government-backed groups pile on.

Ivanti Endpoint Manager Mobile (EPMM / MobileIron Core) ✓Patched

APT actors exploited an unauthenticated API access bug in Ivanti Endpoint Manager Mobile (formerly MobileIron Core) as a zero-day from at least April 2023. They used it to break into the shared IT platform of 12 Norwegian government ministries, possibly chaining it with a file-write bug (CVE-2023-35081).

Citrix NetScaler ADC and NetScaler Gateway ✓Patched

An unauthenticated code injection in NetScaler ADC and Gateway was exploited as a zero-day to plant webshells, including on a US critical infrastructure organisation in June 2023. Citrix patched it on July 18, 2023.

Apple iOS (and other Apple OSes sharing the bugs) ✓Patched

Kaspersky found a years-long zero-click iMessage campaign on its own staff's iPhones. The chain used several Apple zero-days, including a bypass of hardware memory protections through undocumented MMIO registers (CVE-2023-38606), which was revealed at 37C3 in December 2023.

Microsoft Outlook for Windows ✓Patched

A crafted Outlook reminder with a UNC path made Outlook for Windows send the user's NTLM hash to an attacker's server without any click. Microsoft said a Russia-based actor (APT28) used it against European government, transport, energy and military targets.

Fortra GoAnywhere MFT ✓Patched

A pre-auth deserialization/command injection in the GoAnywhere MFT admin console's License Response Servlet was exploited as a zero-day. The Cl0p gang said it stole data from more than 130 organisations, a rehearsal for the later MOVEit campaign.