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CVE-2025-20145

18
FAUCET Score

CVE-2025-20145 is a medium-severity vulnerability in Cisco IOS XR Software affecting various Cisco 8000 and NCS 5500 series routers. It allows an unauthenticated, remote attacker to bypass configured egress Access Control Lists (ACLs) due to incorrect packet handling across line cards. The vulnerability has a CVSS score of 5.8 (Medium) and could lead to unauthorized traffic flow, though it does not impact confidentiality or availability. There is currently no public exploit code, active exploitation, or significant community discussion surrounding this CVE. Cisco has released software updates to address this issue.

Impacted Technologies

VendorProductVersion(s)CPE
6.5.1CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:6.5.1:*:*:*:*:*:*:*
6.5.2CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:6.5.2:*:*:*:*:*:*:*
6.5.3CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:6.5.3:*:*:*:*:*:*:*
6.5.92CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:6.5.92:*:*:*:*:*:*:*
6.5.93CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:6.5.93:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.8MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.38%
Probability of exploitation in next 30 days
EPSS Percentile
30.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0038 is in the 18th percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

blog.apnic.net / 2024/09/02/crafting-endless-as-paths-in-bgp
Technical Description
sec.cloudapps.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-modular-ACL-u5MEPXMm
Vendor Advisory