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Δ / VULNERABILITY RECORD

CVE-2025-61107.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSHIGH / 7.5No severity score in this snapshot.
EXPLOITATION STATUSNot listed in the cached KEV catalogThis does not establish absence of exploitation.
RECORD STATUSMicrosoft vendor recordModified Feb 17, 2026

Disclosure summary

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.

Source-reported weakness categories

CWE-476

Source-specific records & product guidance

Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.

Microsoft Security Updates (CVRF) · 2025-Oct

Open original source · Updated Feb 17, 2026

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.

Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.

Microsoft maximum product score: 7.5

VendorProduct / associationVersion / bounds
Microsoft update guideazl3 frr 9.1.1-3 on Azure Linux 3.0 (MSRC status code 3)
Microsoft update guidecbl2 frr 8.5.5-4 on CBL Mariner 2.0 (MSRC status code 3)
Microsoft update guideazl3 frr 9.1.1-4 on Azure Linux 3.0 (MSRC status code 3)
Microsoft update guidecbl2 frr 8.5.5-5 on CBL Mariner 2.0 (MSRC status code 3)
Microsoft update guideazl3 frr 9.1.1-5 on Azure Linux 3.0 (MSRC status code 3)
Microsoft update guidecbl2 frr 8.5.5-3 on CBL Mariner 2.0 (MSRC status code 3)

Vendor remediation references

  • CBL-Mariner Releases · build 8.5.5-5 · product IDs 20873-17086
  • Vendor guidance · product IDs 20873-17086
  • CBL-Mariner Releases · build 9.1.1-5 · product IDs 20875-17084
  • Vendor guidance · product IDs 20875-17084

Original records & references

PUBLISHED 2025-10-30T21:11:07-04:00
MODIFIED 2026-02-17T21:41:48-05:00
INGESTED 2026-10-08T12:45:38-04:00