CVE-2026-67646
A NVD · · CVE-2026-67646
Admiralty grading (A–F · 1–6)
Source reliability
- A Completely reliable
- B Usually reliable
- C Fairly reliable
- D Not usually reliable
- E Unreliable
- F Cannot be judged
Information credibility
- 1 Confirmed
- 2 Probably true
- 3 Possibly true
- 4 Doubtful
- 5 Improbable
- 6 Cannot be judged
NATO Admiralty (AJP-2.1) grades confidence, independent of the risk score. Cross-source corroboration isn't tracked for non-CVE news, so single-source items are capped at a lower credibility number; a low number does not imply low quality.
Key metrics
- CVSS
- 8.8
- EPSS
- 0%
Key insight
Beyond the bare patch information, the report contains no additional insight on exploitation, attackers, or affected sectors.
Description
CVE-2026-67646 is a vulnerability in Microsoft SQL Server classified as a heap-based buffer overflow (CWE-122). An attacker who already holds valid credentials and network access can exploit the flaw over the network to execute arbitrary code in the context of the SQL Server service. SQL Server installations reachable from the network are affected; the requirement for prior authorization reduces exploitability by unauthenticated attackers but increases relevance in cases of compromised accounts or misconfigured permissions. At the time of the report there is no information on active exploitation, inclusion in the CISA KEV catalog, or a public proof-of-concept; the report originates from the NVD and describes only the vulnerability itself.
Risk score
- cvss base
- 88.00
- kev bonus
- 0.00
- epss bonus
- 0.00
- poc bonus
- 0.00
- raw before weight
- 88.00
- industry weight
- 1.21
- freshness factor
- 1.00
- exploitability factor
- 1.00
- days old
- 0.00
- vendor mismatch penalty
- 0.00
Path: operational