CVE-2025-61102

Name: CVE-2025-61102
Creator: NVD / NIST
Published: 2025-10-27T20:15:54.15+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.46%

Last modified Jun 17, 2026

CVE-2025-61102 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_link_adj_sid function at ospf_ext.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted OSPF packet.. EPSS estimates a 0.46% chance of exploitation in the next 30 days.

Description

FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_link_adj_sid function at ospf_ext.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted OSPF packet.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.46%

36.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Frrouting	Frrouting	>= 4.0, <= 10.4.1

References

https://github.com/FRRouting/frr/issues/19471Exploit, Issue Tracking, Third Party Advisory
https://github.com/FRRouting/frr/pull/19480Issue Tracking, Third Party Advisory
https://github.com/FRRouting/frr/pull/19480/commits/fdd957408605d4a1766225630aafc7e6b7c3daf3Patch
https://github.com/s1awwhy/BugList/blob/main/CVE-2025-61102.mdThird Party Advisory

Timeline

Published: Oct 27, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-61102?

How severe is CVE-2025-61102?

CVE-2025-61102 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.46% probability of exploitation in the next 30 days.

How do I fix CVE-2025-61102?

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-2025-61102?

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

Scan your code now

Source: NVD / NIST