CVE-2015-0769: Cisco IOS XR Software

High severity, CVSS 7.8. EPSS: 2.2% chance of exploitation in the next 30 days.

Cisco IOS XR 4.0.1 through 4.2.0 for CRS-3 Carrier Routing System allows remote attackers to cause a denial of service (NPU ASIC scan and line-card reload) via crafted IPv6 extension headers, aka Bug ID CSCtx03546.

Affected products

• Cisco IOS XR Software: version 4.0.1 only; version 4.0.2 only; version 4.0.3 only; version 4.0.4 only; version 4.0.11 only; version 4.1.0 only; …

Published 2015-06-12. Last modified 2026-06-17.