Strix
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CVE-2025-20145

MEDIUMCVSS 5.8/10EPSS 0.38%

Last modified

CVE-2025-20145 is a medium-severity vulnerability rated 5.8/10 on the CVSS scale. 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. EPSS estimates a 0.38% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
5.8/10

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

EPSS Probability
0.38%

29.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoIos Xr6.5.1
CiscoIos Xr6.5.2
CiscoIos Xr6.5.3
CiscoIos Xr6.5.92
CiscoIos Xr6.5.93
CiscoIos Xr6.6.1
CiscoIos Xr6.6.2
CiscoIos Xr6.6.3
CiscoIos Xr6.6.4
CiscoIos Xr6.6.25
CiscoIos Xr7.0.1
CiscoIos Xr7.0.2
CiscoIos Xr7.0.11
CiscoIos Xr7.0.12
CiscoIos Xr7.0.14
CiscoIos Xr7.0.90
CiscoIos Xr7.1.1
CiscoIos Xr7.1.2
CiscoIos Xr7.2.1
CiscoIos Xr7.2.2
CiscoIos Xr7.2.12
CiscoIos Xr7.3.1
CiscoIos Xr7.3.2
CiscoIos Xr7.3.3
CiscoIos Xr7.3.4
CiscoIos Xr7.3.5
CiscoIos Xr7.3.6
CiscoIos Xr7.3.15
CiscoIos Xr7.3.16
CiscoIos Xr7.4.1
CiscoIos Xr7.4.2
CiscoIos Xr7.5.1
CiscoIos Xr7.5.2
CiscoIos Xr7.5.3
CiscoIos Xr7.5.4
CiscoIos Xr7.5.5
CiscoIos Xr7.5.12
CiscoIos Xr7.6.1
CiscoIos Xr7.6.2
CiscoIos Xr7.7.1
CiscoIos Xr7.7.2
CiscoIos Xr7.7.21
CiscoIos Xr7.8.1
CiscoIos Xr7.8.2
CiscoIos Xr7.8.22
CiscoIos Xr7.9.1
CiscoIos Xr7.9.2
CiscoIos Xr7.10.1
CiscoIos Xr7.10.2
CiscoIos Xr7.11.1

Showing 50 of 61 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Analyzed

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.
How severe is CVE-2025-20145?
CVE-2025-20145 has a CVSS score of 5.8/10 (MEDIUM severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.
How do I fix CVE-2025-20145?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-20145?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST