CVE-2025-61107 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 LSA Update packet.

Api.Msrc.Microsoft • January 3, 2026

Share: View original

Information published.

The full story

This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Multiple CVEs Affect FRRouting with Denial of Service Vulnerabilities Eight vulnerabilities (CVE-2025-61099, CVE-2025-61100, CVE-2025-61101, CVE-2025-61102, CVE-2025-61103, CVE-2025-61104, CVE-2025-61106, CVE-2025-61107) were discovered in FRRouting versions 2.0 through 10.4.1. These vulnerabilities allow attackers to cause Denial of Service (DoS) via crafted OSPF or LSA Update packets due to NULL pointer dereferences in specific functions. 8 sources 36

Extracted Entities

Attack Types (1)

Denial of Service

CVEs (1)