Cisco IOS XR Software Security Hardening Release: September 2026

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. Thes...

PT-2026-84809

Name of the Vulnerable Software and Affected Versions Cisco IOS XR Software affected versions not specified Description Protection mechanism failure issues were identified during an internal security review. These issues are categorized under CWE-693, which refers to a failure to protect against ...

PT-2026-84807

Name of the Vulnerable Software and Affected Versions Cisco IOS XR Software affected versions not specified Description An issue exists involving incorrect calculation errors, categorized under CWE-682, which refers to a correctness issue where a program performs an operation on a buffer that is...

CVE-2026-20279: Improper Access Control

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening releases that address multiple internally discovered vulnerabilities. Th...

CVE-2026-20278: Improper Neutralization

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening releases that address multiple internally discovered vulnerabilities. Th...

CVE-2026-20276: Insufficient Control Flow Management

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening releases that address multiple internally discovered vulnerabilities. Th...

CVE-2026-20274: Improper Control of a Resource Through its Lifetime

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening releases that address multiple internally discovered vulnerabilities. Th...

CVE-2026-20280: Improper Check or Handling of Exceptional Conditions

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening releases that address multiple internally discovered vulnerabilities. Th...

CVE-2026-20277: Protection Mechanism Failure

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening releases that address multiple internally discovered vulnerabilities. Th...

CVE-2026-20275: Incorrect Calculation

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening releases that address multiple internally discovered vulnerabilities. Th...

PT-2026-84806

Name of the Vulnerable Software and Affected Versions Cisco IOS XR Software affected versions not specified Description An improper resource control issue exists within the software, which could lead to a security compromise. This issue is categorized under CWE-664, which refers to an improper...

PT-2026-84808

Name of the Vulnerable Software and Affected Versions Cisco IOS XR Software affected versions not specified Description Insufficient control flow management issues exist within the software, categorized under CWE-691, which relates to the improper handling of control flow in a program...

PT-2026-84811

Name of the Vulnerable Software and Affected Versions Cisco IOS XR Software affected versions not specified Description Improper access control issues exist within the software, which are categorized under Common Weakness Enumeration CWE CWE-284. This refers to a situation where the software does...

PT-2026-84810

Name of the Vulnerable Software and Affected Versions Cisco IOS XR Software affected versions not specified Description An internal security review identified issues related to improper neutralization, which occurs when software fails to properly clean or filter input data before using it in a wa...

PT-2026-84812

Name of the Vulnerable Software and Affected Versions Cisco IOS XR Software affected versions not specified Description An issue exists involving the improper checking or handling of exceptional conditions. This relates to Common Weakness Enumeration CWE CWE-703, which occurs when a program does...

wBlock v3.0.0

wBlock The end of Safari ad-blocking B.S. A free, open-source ad blocker for Safari on Mac, iPhone, iPad, and Apple Vision Pro. wBlock is a free, open-source Safari content blocker for macOS, iOS, iPadOS, and visionOS. Five content blocking extensions provide a combined capacity of 750,000 rules,...

CVE-2026-81267

A malicious webpage could stall a popup's cross-origin navigation after commit, causing the address bar to display the destination origin while continuing to render attacker-controlled content. This vulnerability was fixed in Firefox for iOS 155.0...

CVE-2026-81267 Stalled popup navigation could allow address bar origin spoofing in Firefox for iOS

A malicious webpage could stall a popup's cross-origin navigation after commit, causing the address bar to display the destination origin while continuing to render attacker-controlled content. This vulnerability was fixed in Firefox for iOS 155.0...

EUVD-2026-68739

A malicious webpage could stall a popup's cross-origin navigation after commit, causing the address bar to display the destination origin while continuing to render attacker-controlled content. This vulnerability was fixed in Firefox for iOS 155.0...

CVE-2026-81267 Stalled popup navigation could allow address bar origin spoofing in Firefox for iOS

A malicious webpage could stall a popup's cross-origin navigation after commit, causing the address bar to display the destination origin while continuing to render attacker-controlled content. This vulnerability was fixed in Firefox for iOS 155.0...