CVE-2026-20278
A remote, anonymous attacker can exploit multiple vulnerabilities in Cisco IOS XR to conduct an unspecified attack.
CSIRTS triage
- What
- Multiple vulnerabilities in Cisco IOS XR enable unspecified remote attacks from anonymous attackers.
- Who is affected
- Cisco IOS XR devices with remote network access.
- Urgency
- High severity; unspecified remote attack vectors from unauthenticated sources require urgent investigation.
- Action
- Review Cisco security advisories for IOS XR CVE-2026-20274 through CVE-2026-20280 and apply patches.
AI-assisted analysis generated from the source advisory — verify against the original.
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Advisory coverage (5)
- high[NEW] [high] Cisco IOS XR: Multiple vulnerabilities enable unspecified attackcert-bund · 2026-09-03
- unknownCisco Products Multiple Vulnerabilitieshkcert · 2026-09-03
- criticalCisco IOS XR Software Security Hardening Release: September 2026cisco-psirt · 2026-09-02
- highCVE-2026-20278: As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS…nvd · 2026-09-02
- criticalCisco Advance Notification for Publication of September 2, 2026, Security Advisoriescisco-psirt · 2026-09-02
External references
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