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

Advisory at a Glance  Title  Chinese Government-linked Cyber Threat Actors Combine Automated and Hands-on Hacking Tools to Steal Sensitive Data  Original Publication  October 8, 2026   Executive Summary  Chinese government-linked cyber threat actors, enabled by the Integrity Technology Group, are combining automated scanning tools, large-scale botnets, and hands-on exploitation techniques to target and steal sensitive data from organizations worldwide, including US critical infrastructure sectors. These actors exploit vulnerabilities by using scanning tools, cross-site scripting attacks, and password spraying on Microsoft Exchange servers, while establishing persistence through VPN software and exfiltrating emails and credentials using scripts. To help mitigate against this activity, organizations should prioritize disabling unused services and ports, sanitizing web application inputs to prevent injection attacks, implementing multifactor authentication for all services, and applying timely patches to reduce risks of compromise.  Affected Products  CVE-2014-6278   CVE-2015-3306   CVE-2015-5477   CVE-2016-3081   CVE-2019-11510   CVE-2021-22205   CVE-2021-3199   CVE-2023-22894   Key Actions  ...

ISC BIND contains a data processing errors vulnerability that could allow remote attackers to cause a denial of service via TKEY queries.

ProFTPD contains an improper access control vulnerability that could allow remote attackers to read and write to arbitrary files via the site cpfr and site cpto commands.

View CSAF Summary ABB is aware of public reports of a vulnerability CVE‑2026‑31431 (Copy Fail) in the product versions listed as affected in the advisory. An update is available that resolves a publicly reported vulnerability. CVE‑2026‑31431 (Copy Fail) is a Linux kernel vulnerability that may allow a locally authenticated user or compromised container workload to gain elevated (root) privileges on affected systems. Once root access is obtained, the attacker can effectively gain complete control of the system The following versions of ABB Ability Edgenius are affected: Ability Edgenius >=3.2.0.0|<3.2.4.1, 3.2.4.1 (CVE-2026-31431) CVSS Vendor Equipment Vulnerabilities v3 7.8 ABB ABB Ability Edgenius Incorrect Resource Transfer Between Spheres Background Critical Infrastructure Sectors: Critical Manufacturing, Energy, Water and Wastewater, Chemical Countries/Areas Deployed: Worldwide Company Headquarters Location: Switzerland Vulnerabilities Expand All + CVE-2026-31431 A Linux kernel vulnerability that may allow a locally authenticated user or compromised container workload to gain elevated (root) privileges on affected systems. The issue originates in the Linux kernel’s cryptographic subsystem and impacts kernels used by most major Linux distributions released since 2017.Successful exploitation requires local code execution, however, in shared, containerized, or multi‑tenant env...

View CSAF Summary ABB is aware of public reports of a vulnerability CVE‑2026‑31431 (Copy Fail) in the product versions listed as affected in the advisory. An update is available that resolves a publicly reported vulnerability. CVE‑2026‑31431 (Copy Fail) is a Linux kernel vulnerability that may allow a locally authenticated user or compromised container workload to gain elevated (root) privileges on affected systems. Once root access is obtained, the attacker can effectively gain complete control of the system The following versions of ABB Ability Edgenius are affected: Ability Edgenius >=3.2.0.0|<3.2.4.1 installed on ABB Ability Edgenius Gateway - bE100, >=3.2.0.0|<3.2.4.1 installed on ABB Ability Edgenius Gateway - E3100C, >=3.2.0.0|<3.2.4.1 installed on ABB Ability Edgenius Server - vE1000 (CVE-2026-31431, CVE-2026-31431, CVE-2026-31431) CVSS Vendor Equipment Vulnerabilities v3 7.8 ABB ABB Ability Edgenius Incorrect Resource Transfer Between Spheres Background Critical Infrastructure Sectors: Critical Manufacturing Countries/Areas Deployed: Worldwide Company Headquarters Location: Switzerland Vulnerabilities Expand All + CVE-2026-31431 CVE‑2026‑31431 (Copy Fail) is a Linux kernel vulnerability that may allow a locally authenticated user or compromised container workload to gain elevated (root) privileges on affected systems. The issue originates in the Linux kerne...

View CSAF Summary B&R is aware of publicly reported vulnerabilities affecting the Linux kernel versions shipped with the products listed as affected in the advisory. Successful local exploitation of these vulnerabilities could allow an attacker to escalate privileges on the affected system. Public proof-of-concept exploits are available for the vulnerabilities described herein. At the time of publication of this advisory, B&R had no evidence of active exploitation targeting B&R products. The following versions of Impact of Linux Kernel vulnerabilities on B&R products are affected: Linux for B&R <=12  APROL <APROL-AutoYaST-DVD- V4.4-010.10.260602 X20EDS410 /all  CVSS Vendor Equipment Vulnerabilities v3 7.8 B&R Industrial Automation GmbH Impact of Linux Kernel vulnerabilities on B&R products Incorrect Resource Transfer Between Spheres, Write-what-where Condition, Improper Privilege Management, Out-of-bounds Write, Multiple Releases of Same Resource or Handle Background Critical Infrastructure Sectors: Critical Manufacturing Countries/Areas Deployed: Worldwide Company Headquarters Location: Switzerland Vulnerabilities Expand All + CVE-2026-31431 In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Revert to operating out-of-place This mostly reverts commit 72548b093ee3 except for the copying of the assoc...

Less than two weeks after the public disclosure of the Copy Fail vulnerability (CVE-2026-31431), another local privilege escalation (LPE) vulnerability in the Linux kernel has been revealed. Referred to as "Dirty Frag," this vulnerability was discovered and reported by Hyunwoo Kim (@v4bel) [1]. In this diary, I will provide a brief background on Dirty Frag, and discuss its relationship to Copy Fail. I will then discuss how to mitigate Dirty Frag and outline recommended next steps for system owners. 

Details have emerged about a new, unpatched local privilege escalation (LPE) vulnerability impacting the Linux kernel. Dubbed Dirty Frag, it has been described as a successor to Copy Fail (CVE-2026-31431, CVSS score: 7.8), a recently disclosed LPE flaw impacting the Linux kernel that has since come under active exploitation in the wild. The vulnerability was reported to Linux kernel maintainers

A high-severity Linux vulnerability, “Copy Fail” (CVE-2026-31431), enables root privilege escalation across cloud environments and Kubernetes workloads. With a working exploit already in the wild, organizations should act quickly to detect, mitigate, and reduce risk. The post CVE-2026-31431: Copy Fail vulnerability enables Linux root privilege escalation across cloud environments appeared first on Microsoft Security Blog .

CISA has added one new vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog , based on evidence of active exploitation. CVE-2026-31431 Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability This type of vulnerability is a frequent attack vector for malicious cyber actors and poses significant risks to the federal enterprise. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the KEV Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information. Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of KEV Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria . 

Linux Kernel contains an incorrect resource transfer between spheres vulnerability that could allow for privilege escalation.