CVE-2026-67637
A NVD · · CVE-2026-67637
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
A plain NVD patch notice with no indication of active exploitation or a PoC; since the description states the attacker must already be authorized, the risk shifts from network exposure to internal privilege assignment and account hardening.
Description
CVE-2026-67637 describes a heap-based buffer overflow in Microsoft SQL Server. According to the NVD entry, an authorized attacker can thereby execute arbitrary code over the network. The vulnerability therefore requires valid credentials and corresponding permissions on the affected instance; exploitation without prior authentication is not described. At the time of the alert, there is no information on active exploitation in the wild, a public proof of concept, or inclusion in the CISA KEV list. Details on affected versions, CVSS score, and patch status are not included in the short entry.
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