CVE-2025-20145 A vulnerability in the access control list (ACL) processing in the egress direction of Cisco IOS XR Software could allow…
Description
A vulnerability in the access control list (ACL) processing in the egress direction of Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability exists because certain packets are handled incorrectly when they are received on an ingress interface on one line card and destined out of an egress interface on another line card where the egress ACL is configured. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an egress ACL on the affected device. For more information about this vulnerability, see the section of this advisory. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Cisco IOS XR Software | 24.4.1 | No fix stated |
| Cisco IOS XR Software 24.3 | 24.3.1 → 24.3.2 | No fix stated |
| Cisco IOS XR Software 24.2 | 24.2.1 → 24.2.20 | No fix stated |
| Cisco IOS XR Software 24.1 | 24.1.1 → 24.1.2 | No fix stated |
| Cisco IOS XR Software 7.11 | 7.11.1 → 7.11.21 | No fix stated |
| Cisco IOS XR Software 7.10 | 7.10.1 → 7.10.2 | No fix stated |
| Cisco IOS XR Software 7.9 | 7.9.1 → 7.9.2 | No fix stated |
| Cisco IOS XR Software 7.8 | 7.8.1 → 7.8.22 | No fix stated |
| Cisco IOS XR Software 7.7 | 7.7.1 → 7.7.21 | No fix stated |
Show the 9 other branches Hide the 9 other branches
| Product | Affected versions | Fixed in |
|---|---|---|
| Cisco IOS XR Software 7.6 | 7.6.1 → 7.6.2 | No fix stated |
| Cisco IOS XR Software 7.5 | 7.5.1 → 7.5.12 | No fix stated |
| Cisco IOS XR Software 7.4 | 7.4.1 → 7.4.2 | No fix stated |
| Cisco IOS XR Software 7.3 | 7.3.1 → 7.3.16 | No fix stated |
| Cisco IOS XR Software 7.2 | 7.2.1 → 7.2.12 | No fix stated |
| Cisco IOS XR Software 7.1 | 7.1.1 → 7.1.2 | No fix stated |
| Cisco IOS XR Software 7.0 | 7.0.1 → 7.0.90 | No fix stated |
| Cisco IOS XR Software 6.6 | 6.6.1 → 6.6.25 | No fix stated |
| Cisco IOS XR Software 6.5 | 6.5.1 → 6.5.93 | No fix stated |
References
- cisco-sa-modular-ACL-u5MEPXMm sec.cloudapps.cisco.com
- Crafting endless AS-PATHS in BGP blog.apnic.net
Timeline
- Published
- Last modified