CVE-2025-61102

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-10-27 · updated 2026-06-17
Weakness: CWE-476

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.

Affected products

FRRouting: from 4.0 through 10.4.1

References

https://github.com/FRRouting/frr/issues/19471
https://github.com/FRRouting/frr/pull/19480
https://github.com/FRRouting/frr/pull/19480/commits/fdd957408605d4a1766225630aafc7e6b7c3daf3
https://github.com/s1awwhy/BugList/blob/main/CVE-2025-61102.md

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