What is CVE-2025-61103?

CVE-2025-61103 is a high-severity vulnerability in Frrouting, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2025-10-28.

How severe is CVE-2025-61103?

High severity. CVSS v3 base score is 7.5 out of 10.

NULL pointer dereference in Frrouting

CVE-2025-61103

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.

EPSS: 0.006 (45.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Frrouting
N/a — versions n/a

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

cve@mitre.org (Third Party Advisory, Issue Tracking)
cve@mitre.org (Exploit, Third Party Advisory, Issue Tracking)
cve@mitre.org (Patch)
cve@mitre.org (Third Party Advisory)

Frequently asked questions

What is CVE-2025-61103?: CVE-2025-61103 is a high-severity vulnerability in Frrouting, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2025-10-28.
How severe is CVE-2025-61103?: High severity. CVSS v3 base score is 7.5 out of 10.