NULL Pointer Dereference in FRRouting OSPF Function Affects Network Devices
CVE-2025-61102

7.5HIGH

Key Information:

Vendor

FRRouting

Status
FRRouting
Vendor
CVE Published:
27 October 2025

What is CVE-2025-61102?

A vulnerability has been identified in FRRouting versions from 4.0 to 10.4.1, specifically within the 'show_vty_ext_link_adj_sid' function in ospf_ext.c. This flaw can be exploited by attackers through the transmission of specially crafted OSPF packets, resulting in a Denial of Service (DoS) condition. Implementing this exploit may disrupt network services, emphasizing the need for timely updates and preventive measures.

References

https://github.com/FRRouting/frr/pull/19480
https://github.com/FRRouting/frr/issues/19471
https://github.com/FRRouting/frr/pull/19480/commits/fdd95...

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
.