CVE-2025-20145: cisco cisco ios xr software
Vulnerability summary
CVE-2025-20145 is a medium (CVSS 5.8) vulnerability in cisco cisco ios xr software. EPSS estimates a 0.41% chance of exploitation in the next 30 days, higher than 33.4% of scored vulnerabilities.
Timeline
- 12-03-2025PublishedVulnerability first disclosed.
- 21-03-2025Last modifiedVulnerability information updated.
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.
CVSS metrics
2 scores · 2 sources · 1 version- NVDNIST5.8MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
EPSS trend
Probability
0.41%
Chance of exploitation in the next 30 days
Percentile
33%
Versus all other CVEs
30-day change
+0.01 pp
From 0.40% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Cisco2 products
- cisco ios xr software6.5.3 | 6.5.2 | 6.5.92 | 6.5.1 | 6.6.2 | 7.0.1 | 6.6.25 | 6.6.1 | 6.5.93 | 7.1.1 | 7.0.90 | 6.6.3 | 7.0.2 | 7.2.1 | 7.1.2 | 7.0.11 | 7.0.12 | 7.0.14 | 6.6.4 | 7.2.12 | 7.3.1 | 7.4.1 | 7.2.2 | 7.3.15 | 7.3.16 | 7.3.2 | 7.5.1 | 7.6.1 | 7.5.2 | 7.8.1 | 7.5.12 | 7.7.1 | 7.3.3 | 7.4.2 | 7.3.4 | 7.6.2 | 7.5.3 | 7.7.2 | 7.9.1 | 7.10.1 | 7.8.2 | 7.5.4 | 7.8.22 | 7.7.21 | 7.9.2 | 7.3.5 | 7.5.5 | 7.11.1 | 7.10.2 | 24.1.1 | 7.3.6 | 7.11.2 | 24.2.1 | 24.1.2 | 24.2.11 | 24.3.1 | 24.4.1 | 24.2.2 | 7.11.21 | 24.2.20 | 24.3.2
- ios_xr6.5.1 | 6.5.2 | 6.5.3 | 6.5.92 | 6.5.93 | 6.6.1 | 6.6.2 | 6.6.3 | 6.6.4 | 6.6.25 | 7.0.1 | 7.0.2 | 7.0.11 | 7.0.12 | 7.0.14 | 7.0.90 | 7.1.1 | 7.1.2 | 7.2.1 | 7.2.2 | 7.2.12 | 7.3.1 | 7.3.2 | 7.3.3 | 7.3.4 | 7.3.5 | 7.3.6 | 7.3.15 | 7.3.16 | 7.4.1 | 7.4.2 | 7.5.1 | 7.5.2 | 7.5.3 | 7.5.4 | 7.5.5 | 7.5.12 | 7.6.1 | 7.6.2 | 7.7.1 | 7.7.2 | 7.7.21 | 7.8.1 | 7.8.2 | 7.8.22 | 7.9.1 | 7.9.2 | 7.10.1 | 7.10.2 | 7.11.1 | 7.11.2 | 7.11.21 | 24.1.1 | 24.1.2 | 24.2.1 | 24.2.2 | 24.2.11 | 24.2.20 | 24.3.1 | 24.3.2 | 24.4.1
1 vendor · 2 products
References
2 links- blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/Technical Description