Vulnerability · Published Oct 27, 2025 · Assigned by mitre
CVE-2025-61100
High 7.5
In plain English
A high-severity null pointer dereference in the frr package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 57.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | frr | 8.4.4-1.1~deb12u2 | DEBIAN-CVE-2025-61100 |
| Debian:13 | frr | 10.3-3+deb13u1 | DEBIAN-CVE-2025-61100 |
| Debian:14 | frr | 10.5.1-3 | DEBIAN-CVE-2025-61100 |
| Ubuntu:22.04:LTS | frr | 8.1-1ubuntu1.14 | USN-8046-1 |
| Ubuntu:22.04:LTS | frr | 8.1-1ubuntu1.14 | UBUNTU-CVE-2025-61100 |
| Ubuntu:24.04:LTS | frr | 8.4.4-1.1ubuntu6.5 | USN-8046-1 |
| Ubuntu:24.04:LTS | frr | 8.4.4-1.1ubuntu6.5 | UBUNTU-CVE-2025-61100 |
| Ubuntu:25.10 | frr | 10.4.1-3ubuntu1.1 | UBUNTU-CVE-2025-61100 |
| Ubuntu:25.10 | frr | 10.4.1-3ubuntu1.1 | USN-8046-1 |
| Ubuntu:26.04:LTS | frr | 10.5.1-1ubuntu2 | UBUNTU-CVE-2025-61100 |
Affected products (as reported)
Weakness: CWE-476 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H