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Fencer Vulns
medium 6.5

CVE-2026-67641 json

Microsoft SQL Server Denial of Service Vulnerability

published 2026-09-08 2 mo ago modified 2026-10-31 8 d ago also EUVD-2026-73388

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits
0
none known

Summary

Integer overflow or wraparound in SQL Server allows an authorized attacker to deny service over a network.

Patch / fix

  • Microsoft Microsoft SQL Server 2022 (CU 26) 16.0.4275.2
  • Microsoft Microsoft SQL Server 2022 (GDR) 16.0.1200.5
  • Microsoft Microsoft SQL Server 2025 (CU8) 17.0.4085.5
  • Microsoft Microsoft SQL Server 2025 for x64-based Systems (GDR) 17.0.1135.8

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 mo ago

Exploit prediction

1.14% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Microsoft Microsoft SQL Server 2022 (CU 26)
  • Microsoft Microsoft SQL Server 2022 (GDR)
  • Microsoft Microsoft SQL Server 2025 (CU8)
  • Microsoft Microsoft SQL Server 2025 for x64-based Systems (GDR)

Classification

Weakness
  • CWE-190 Integer Overflow or Wraparound
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.