CVE-2025-61100 Null dereference in n/a

What is CVE-2025-61100?

CVE-2025-61100 is a high-severity vulnerability in n/a, published on 27 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

FRRouting/frr from v2.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the ospf_opaque_lsa_dump function at ospf_opaque.c. This vulnerability allows attackers to cause a Denial of Service (DoS) under specific malformed LSA conditions.

Weakness: CWE-476

Which versions are affected by CVE-2025-61100?

It affects 1 product.

Products include Frrouting Frrouting.

How do I fix CVE-2025-61100?

Upgrade to a fixed version.

Is CVE-2025-61100 being exploited?

There is no known exploitation of CVE-2025-61100 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2024-44070 Denial of service in n/a Critical 9.8
• CVE-2023-38406 bgpd/bgp_flowspec.c in FRRouting (FRR) before 8.4.3 mishandles an nlri length of zero, aka a "flowspec overflow." Critical 9.8
• CVE-2022-37035 Use after free in n/a High 8.1
• CVE-2022-26127 Memory corruption in FRRouting High 7.8
• CVE-2022-26128 Memory corruption in FRRouting High 7.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-69565, AZL-69574, DEBIAN-CVE-2025-61100, GHSA-v8m2-rxq9-9x2j, UBUNTU-CVE-2025-61100.