CVE-2026-20278

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 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 a software hardening releases that address multiple internally discovered vulnerabilities. Th...

EUVD-2026-70208

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

CVE-2026-20278 affects Cisco IOS XR Software and stems from improper neutralization issues (CWE-707) discovered through Cisco's internal security review. Multiple vulnerabilities are grouped under this single CVE in the September 2026 hardening release . The CVSS 3.1 score is 8.8 (HIGH) with a ne...

CVE-2026-20280 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 a software hardening releases that address multiple internally discovered vulnerabilities. Th...

CVE-2026-20280

CVE-2026-20280 is a Cisco IOS XR Software security hardening release (September 2026) addressing multiple internally discovered vulnerabilities classified under CWE-703 (improper checking or handling of exceptional conditions). The weaknesses are reachable over the network with low privileges and...

CVE-2026-20279

Cisco IOS XR Software is affected by improper access control weaknesses (CWE-284) identified through an internal security review and addressed in the September 2026 security hardening release . The CVSS v3.1 score is 9.8 (Critical) , with a vector indicating network attack vector , low complexity...

CVE-2026-20279 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 a software hardening releases that address multiple internally discovered vulnerabilities. Th...

EUVD-2026-70205

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

Cisco IOS XR Software is affected by multiple internally discovered vulnerabilities addressed in a security hardening release (September 2026). The root cause is categorized as CWE-682 (incorrect calculation issues). The combined CVSS 3.1 score is 8.8 (High) with a vector of AV:A/AC:L/PR:N/UI:N/S...

CVE-2026-20274 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 a software hardening releases that address multiple internally discovered vulnerabilities. Th...

CVE-2026-20274

Cisco IOS XR Software is affected by multiple internally discovered improper resource control issues (CWE-664), identified through Cisco's September 2026 security hardening review. The vulnerabilities carry a CVSS 3.1 score of 9.8 (Critical) with a network attack vector, low complexity, no privil...

CVE-2026-20276

CVE-2026-20276 affects Cisco IOS XR Software and stems from insufficient control flow management (CWE-691), identified during an internal security review as part of a September 2026 hardening release. The CVSS 3.1 score is 8.6 (HIGH) with a network attack vector, no privileges required, no user i...

CVE-2026-20277 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 a software hardening releases that address multiple internally discovered vulnerabilities. Th...

CVE-2026-20277

Cisco IOS XR Software is affected by multiple internally discovered protection mechanism failure vulnerabilities (CWE-693), identified during a comprehensive internal security review. The issues carry a CVSS v3.1 score of 8.2 (HIGH) , with primarily an availability impact and a low integrity impa...

EUVD-2026-70202

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...

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...