CVE-2025-20145

MEDIUM
Published Mar 12, 2025 Modified Aug 4, 2025 CWE-264

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.

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CVSS v3.1 Score

5.8
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Weakness Type (CWE)

CWE-264 CWE-264

Affected Products

Vendor Product
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco ios_xr
cisco 8608
cisco 8804
cisco 8808
cisco 8812
cisco 8818
cisco ncs_5504
cisco ncs_5508
cisco ncs_5516

References

Frequently Asked Questions

What is CVE-2025-20145? +
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. It has a CVSS v3.1 base score of 5.8 (MEDIUM).
How severe is CVE-2025-20145? +
CVE-2025-20145 has a CVSS v3.1 score of 5.8 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.
What products are affected by CVE-2025-20145? +
CVE-2025-20145 affects products from cisco, specifically: 8608, 8804, 8808, 8812, 8818, ios_xr, ncs_5504, ncs_5508, ncs_5516. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2025-20145? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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