NULL pointer dereference in Frrouting
CVE-2025-61100
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.
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: 0.005 (40.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 40.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · 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/cda5ddac0940562d1dca7cbef34d0ce5b00… (Patch)
- github.com/s1awwhy/BugList/blob/main/CVE-2025-61100.md (Third Party Advisory)
Frequently asked questions
- What is CVE-2025-61100?
- CVE-2025-61100 is a high-severity vulnerability in Frrouting, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2025-10-27.
- How severe is CVE-2025-61100?
- High severity. CVSS v3 base score is 7.5 out of 10.