NULL pointer dereference in Frrouting
CVE-2025-61107
FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the show_vty_ext_pref_pref_sid function at ospf_ext.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted LSA Update packet.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.006 (48.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000
Affected products
Weakness classification (CWE)
References
- github.com/FRRouting/frr/pull/19480 (Third Party Advisory, Issue Tracking)
- github.com/FRRouting/frr/issues/19471 (Exploit, Third Party Advisory, Issue Tracking)
- github.com/FRRouting/frr/pull/19480/commits/fdd957408605d4a1766225630aafc7e6b7c… (Patch)
- github.com/s1awwhy/BugList/blob/main/CVE-2025-61107.md (Third Party Advisory)
Frequently asked questions
- What is CVE-2025-61107?
- CVE-2025-61107 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-2025-61107?
- High severity. CVSS v3 base score is 7.5 out of 10.