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7.5
HIGH CVSS 3.1
CVE-2025-61100
FRRouting OSPF NULL Pointer Dereference Denial of Service
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.

INFO

Published Date :

Oct. 27, 2025, 7:16 p.m.

Last Modified :

Nov. 3, 2025, 6:02 p.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2025-61100 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Frrouting frrouting
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH 134c704f-9b21-4f2e-91b3-4a467353bcc0
Solution
Apply available patches to fix a NULL pointer dereference vulnerability in OSPF.
  • Update FRRouting to a patched version.
  • Apply vendor-supplied security patches.
  • Validate LSA integrity before processing.
Public PoC/Exploit Available at Github

CVE-2025-61100 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-61100.

URL Resource
https://github.com/FRRouting/frr/issues/19471 Exploit Issue Tracking Third Party Advisory
https://github.com/FRRouting/frr/pull/19480 Issue Tracking Third Party Advisory
https://github.com/FRRouting/frr/pull/19480/commits/cda5ddac0940562d1dca7cbef34d0ce5b00f160b Patch
https://github.com/s1awwhy/BugList/blob/main/CVE-2025-61100.md Third Party Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-61100 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-61100 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
s1awwhy/BugList

None

Python

Updated: 2 weeks ago
0 stars 0 fork 0 watcher
Born at : Aug. 21, 2025, 6:08 a.m. This repo has been linked 9 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-61100 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-61100 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Nov. 03, 2025

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:frrouting:frrouting:*:*:*:*:*:*:*:* versions from (including) 2.0 up to (including) 10.4.1
    Added Reference Type MITRE: https://github.com/FRRouting/frr/issues/19471 Types: Exploit, Issue Tracking, Third Party Advisory
    Added Reference Type MITRE: https://github.com/FRRouting/frr/pull/19480 Types: Issue Tracking, Third Party Advisory
    Added Reference Type MITRE: https://github.com/FRRouting/frr/pull/19480/commits/cda5ddac0940562d1dca7cbef34d0ce5b00f160b Types: Patch
    Added Reference Type MITRE: https://github.com/s1awwhy/BugList/blob/main/CVE-2025-61100.md Types: Third Party Advisory
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Oct. 28, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Added CWE CWE-476
  • New CVE Received by [email protected]

    Oct. 27, 2025

    Action Type Old Value New Value
    Added 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.
    Added Reference https://github.com/FRRouting/frr/issues/19471
    Added Reference https://github.com/FRRouting/frr/pull/19480
    Added Reference https://github.com/FRRouting/frr/pull/19480/commits/cda5ddac0940562d1dca7cbef34d0ce5b00f160b
    Added Reference https://github.com/s1awwhy/BugList/blob/main/CVE-2025-61100.md
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 7.5
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact