High severity · published Oct 27, 2025
CVE-2025-61099
FRRouting/frr from v2.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the opaque_info_detail function at ospf_opaque.c
7.5
CVSS
0.5%
EPSS
No
On KEV
Description
FRRouting/frr from v2.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the opaque_info_detail function at ospf_opaque.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted LS Update packet.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FR
Frrouting · Frrouting
2.0 through 10.4.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-61099
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-61099
Exploit
https://github.com/FRRouting/frr/issues/19471
Issue Tracking
https://github.com/FRRouting/frr/pull/19480
Patch
https://github.com/FRRouting/frr/pull/19480/commits/0042fbe8ca5aba866b4f0d166e54066bba5ab14e
Third Party Advisory
https://github.com/s1awwhy/BugList/blob/main/CVE-2025-61099.md
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