FRRouting FRR up to 10.4.1 OSPF ospf_ext.c show_vty_ext_pref_pref_sid null pointer dereference

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.4$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in FRRouting FRR up to 10.4.1. This vulnerability affects the function show_vty_ext_pref_pref_sid of the file ospf_ext.c of the component OSPF Handler. The manipulation results in null pointer dereference. This vulnerability is known as CVE-2025-61106. No exploit is available.

Detailsinfo

A vulnerability classified as problematic has been found in FRRouting FRR up to 10.4.1. Affected is the function show_vty_ext_pref_pref_sid of the file ospf_ext.c of the component OSPF Handler. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. CVE summarizes:

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 OSPF packet.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2025-61106 since 09/26/2025. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 271927 (Linux Distros Unpatched Vulnerability : CVE-2025-61106), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (271927) and CERT Bund (WID-SEC-2025-2428). Once again VulDB remains the best source for vulnerability data.

Affected

  • Ubuntu Linux
  • SUSE Linux
  • SUSE openSUSE
  • FRRouting Project FRRouting

Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 271927
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-61106

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

09/26/2025 CVE reserved
10/28/2025 +32 days Advisory disclosed
10/28/2025 +0 days VulDB entry created
02/28/2026 +123 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Not defined

CVE: CVE-2025-61106 (🔒)
GCVE (CVE): GCVE-0-2025-61106
GCVE (VulDB): GCVE-100-330300
CERT Bund: WID-SEC-2025-2428 - FRRouting (ospf_opaque.c): Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 10/28/2025 16:02
Updated: 02/28/2026 03:46
Changes: 10/28/2025 16:02 (55), 10/28/2025 20:20 (7), 10/29/2025 07:31 (2), 02/28/2026 03:46 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!