CVE-2025-61104: Null Pointer Dereference
Published Oct 28, 2025
·Updated
FRRouting/frr from v4.0 through v10.4.1 was discovered to contain a NULL pointer dereference via the showvtyunknowntlv function at ospfext.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted OSPF packet.
Affected Software
8 affected componentsFixes available
Frrouting FRRouting>=4.0<=10.4.1
Frrouting FRRouting>=4.0<=10.4.1
Microsoft azl3 frr 9.1.1-3
Microsoft cbl2 frr 8.5.5-3
Microsoft cbl2 frr 8.5.5-4
Microsoft cbl2 frr 8.5.5-5
Microsoft azl3 frr 9.1.1-5
Microsoft azl3 frr 9.1.1-4
Remediation
Event History
Oct 28, 2025
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Data Sourced
via NVD·03:16 PM
RemedyDescriptionSeverityWeaknessAffected Software
Nov 2, 2025
Data Sourced
via Microsoft·01:02 AM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·01:02 AM
Affected Software
Updated
via Microsoft·09:02 AM
DescriptionSeverity
Updated
via Microsoft·09:02 AM
Affected Software
Frequently Asked Questions
1
What is the severity of CVE-2025-61104?
CVE-2025-61104 has been classified as a Denial of Service (DoS) vulnerability.
2
How do I fix CVE-2025-61104?
To fix CVE-2025-61104, update to FRRouting version 10.4.2 or later.
3
What causes the vulnerability in CVE-2025-61104?
The vulnerability in CVE-2025-61104 is caused by a NULL pointer dereference in the show_vty_unknown_tlv function.
4
Which versions of FRRouting are affected by CVE-2025-61104?
FRRouting versions from 4.0 through 10.4.1 are affected by CVE-2025-61104.
5
What impact does CVE-2025-61104 have on network operations?
CVE-2025-61104 can cause a Denial of Service (DoS), disrupting network operations when exploited.