CVE-2025-61103 Null dereference in n/a

What is CVE-2025-61103?

CVE-2025-61103 is a high-severity vulnerability in n/a, published on 28 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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

Weakness: CWE-476

Which versions are affected by CVE-2025-61103?

It affects 1 product.

Products include Frrouting Frrouting.

How do I fix CVE-2025-61103?

Upgrade to a fixed version.

Is CVE-2025-61103 being exploited?

There is no known exploitation of CVE-2025-61103 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-69440, AZL-69461, DEBIAN-CVE-2025-61103, GHSA-9jg5-7c35-vv38, UBUNTU-CVE-2025-61103.