September 2026 Patch Tuesday fixes a record 974 CVEs including 2 exploited zero-days, 20 wormable bugs, and a critical Exchange RCE via Visio email. Microsoft’s September 2026 Patch Tuesday set a new record. Depending on how researchers count external and Chromium bugs, Microsoft fixed between 966 and 997 CVEs in this update. The company also […]
The exploitation activity follows attacks earlier this summer on two other zero-day vulnerabilities in the vendor's edge devices.
SonicWall warned customers that threat actors are chaining two new SMA1000 zero-day vulnerabilities in remote code execution attacks. [...]
PaperCut servers are under active attack, while 47% of tracked installations still run unpatched versions vulnerable to remote code execution. PaperCut, the print management software running in schools, hospitals, and offices worldwide, confirmed on August 27 that a pre-authentication remote code execution flaw is being actively exploited against real customers. Researchers at Huntress found evidence […]
UPDATED: PaperCut NG and PaperCut MF are under active exploitation. Huntress reproduced a pre-auth RCE chain and shares urgent patching, exposure, and detection guidance.
CISA has ordered U.S. government agencies to patch their Citrix NetScaler appliances against an actively exploited remote code execution vulnerability by Saturday. [...]
A now-patched security flaw impacting Zimbra Collaboration (ZCS) has come under active exploitation in the wild, according to the Polish Computer Emergency Response Team (CERT Polska). The vulnerability in question is CVE-2026-73570 (CVSS score: 8.9), which refers to a case of command injection that can lead to remote code execution. "A remote code execution vulnerability exists in Zimbra
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) warned that hackers are exploiting a critical-severity remote code execution (RCE) flaw in the Windows Internet Key Exchange (IKE) Service Extensions component. [...]
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has confirmed that ransomware gangs are also exploiting a high-severity Windows Task Host vulnerability that was flagged as actively exploited in April. [...]
A newly disclosed zero-day flaw in GeoServer is seeing active exploitation efforts, per watchTowr. The vulnerability, which has yet to be assigned a CVE identifier, is an SQL injection vulnerability in the open-source platform that can lead to remote code execution (RCE). The security defect remains unpatched. It was first disclosed on August 12, 2026, at 10:46 UTC, by a researcher named @
Written by: Chester Sng, Pete Boonyakarn, Logeswaran Nadarajan, Lukasz Lamparski Introduction In early 2026, Mandiant identified a threat actor targeting SD-WAN infrastructure at a service provider. After gaining initial access, the threat actor exploited a zero-day vulnerability (CVE-2026-20245) in Cisco Catalyst SD-WAN to escalate privileges from a compromised administrative account to root-level access. The vulnerability stems from the device’s file upload feature lacking the ability to prop…
A likely zero-day vulnerability in SonicWall VPNs is being actively exploited to bypass MFA and deploy ransomware. Huntress advises disabling the VPN service immediately or severely restricting access via IP allow-listing. We're seeing threat actors pivot directly to domain controllers within hours of the initial breach.
Huntress discovered active exploitation of Wing FTP Server RCE (CVE-2025-47812). Learn more about the injection flaw, attack timeline, forensic artifacts, and how to protect your organization.
Our team is tracking in-the-wild exploitation of a zero-day vulnerability against Progress' MOVEit Transfer web application that allows for escalated privileges and unauthorized access.
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday added five security flaws to its Known Exploited Vulnerabilities (KEV) catalog, following their abuse by a China-linked threat actor known as Flax Typhoon. The vulnerabilities in question are listed below - CVE-2015-3306 (CVSS score: 10.0) - An improper access control vulnerability in ProFTPD that could allow
A critical vulnerability (CVE-2026-21589) affecting multiple Atlassian product families, including Jira, Confluence, and Bitbucket, is being exploited in attacks that do not require authentication. [...]
U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Citrix NetScaler flaw to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added a Citrix NetScaler flaw tracked as CVE-2026-88779 (CVSS score of 8.7), to its Known Exploited Vulnerabilities (KEV) catalog. CVE-2026-88779 is a memory overflow vulnerability in Citrix NetScaler ADC and Gateway […]
U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Fortinet FortiMail flaw to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added a Fortinet FortiMail flaw, tracked as CVE-2026-104286 (CVSS score of 9.8), to its Known Exploited Vulnerabilities (KEV) catalog. The flaw is a path traversal vulnerability that can be triggered through […]
U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Cisco Catalyst SD-WAN Manager flaw to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added a Cisco Catalyst SD-WAN Manager flaw, tracked as CVE-2026-76504 (CVSS score of 9.8), to its Known Exploited Vulnerabilities (KEV) catalog. The vulnerability resides in Cisco Catalyst SD-WAN Manager’s […]
U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Apple Multiple Products flaw to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added an Apple Multiple Products flaw, tracked as CVE-2026-86950 (CVSS score of 8.8), to its Known Exploited Vulnerabilities (KEV) catalog. This week, Apple has released security updates for iOS, iPadOS […]
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Sunday added two critical Citrix NetScaler ADC and Gateway flaws to its Known Exploited Vulnerabilities (KEV) catalog, following reports of active exploitation. The vulnerabilities are listed below - CVE-2026-88771 (CVSS score: 9.5) - An improper input validation vulnerability that could allow an unauthenticated attacker to
On 27 September 2026, Citrix published a security bulletin addressing 8 vulnerabilities affecting customer-managed Citrix NetScaler ADC and Citrix NetScaler Gateway, among which 2 critical unauthenticated Remote Code Execution (RCE) vulnerabilities. Citrix has confirmed active exploitation of these 2 critical vulnerabilities in the wild. CERT-EU recommends updating affected software and running a compromise assessment on those exposed on the internet.
U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds WordPress flaw to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added a WordPress Core flaw, tracked as CVE-2026-87902 (CVSS score of 9.2), to its Known Exploited Vulnerabilities (KEV) catalog. CVE-2026-87902 allows an unauthenticated attacker to make the get_page_template() function include a readable local […]
U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Microsoft SharePoint and Mikrotik RouterOS flaws flaws to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added the following vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog: CVE-2026-65660 is a code-injection vulnerability in Microsoft SharePoint Server that allows an authenticated, low-privileged attacker to execute arbitrary […]
The Cybersecurity and Infrastructure Security Agency (CISA) warns that hackers are exploiting a critical authentication bypass vulnerability (CVE-2026-5430) affecting multiple products from enterprise software provider WSO2. [...]
U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Check Point, Arista VeloCloud Orchestrator, and F5 BIG-IP APM flaws to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added the following vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog: CVE-2026-85102 resides in the VPN negotiation process and lets an unauthenticated attacker bypass security checks […]
U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Zyxel flaw to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added a Zyxel GS1900 Series Switches flaw, tracked as CVE-2026-7273 (CVSS score of 8.8), to its Known Exploited Vulnerabilities (KEV) catalog. The flaw is a stack-based buffer overflow that could allow attackers […]
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday added a now-patched security flaw impacting Zyxel GS1900 series switches to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation. The vulnerability, tracked as CVE-2026-7273 (CVSS score: 8.8), is a stack-based buffer overflow vulnerability that could result in arbitrary operating
Google has disclosed that a high-severity security flaw in its Pixel Cellular Modem has come under exploitation in the wild. The vulnerability, tracked as CVE-2026-58704 (CVSS score: 8.0), is a privilege escalation flaw. "In Cellular Modem, there is a possible permission bypass due to a logic error in the code," according to a description of the bug in the NIST National Vulnerability Database
Acronis has warned that a high-severity security flaw in its Backup plugin for cPanel and Web Host Manager (WHM) deployments has been exploited in the wild. The vulnerability, tracked as CVE-2026-87886 (CVSS score: 7.8), is described as a case of local privilege escalation due to insecure file permissions. It affects the following versions - Acronis Backup plugin for cPanel & WHM (Linux
