What is CVE-2026-65669?
Improper neutralization of special elements in output used by a downstream component ('injection') in SQL Server allows an unauthorized attacker to elevate privileges over a network.
The record classifies CVE-2026-65669 under weakness class CWE-74. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs a user to take an action first, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 52 days ago.
Severity and exploitation probability
- CVSS v3.1 base score
- 9.6 — CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C - EPSS (FIRST)
- 0.8% probability of exploitation in the next 30 days, higher than 57.3% of all scored CVEs
- CISA KEV
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Threadlinqs priority
- 7.1/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- Published
- 2026-09-08, last modified 2026-10-08
Is CVE-2026-65669 being exploited?
It currently carries a trending score of 46 in the Threadlinqs vulnerability feed.
Affected products and versions
- Microsoft: SQL Server Management Studio 22
How to fix CVE-2026-65669
The record marks a vendor fix as available for CVE-2026-65669. Patch reference: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65669. Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65669. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.
Threat activity tracking CVE-2026-65669
2 tracked threats in the Threadlinqs corpus reference CVE-2026-65669, either in the campaign’s CVE list or as an indicator on the campaign record.
- September 2026 Microsoft Patch Tuesday — Record 966+ Vulnerabilities with Two Actively Exploited Zero-Days (CVE-2026-81963, CVE-2026-85880) and Multiple Critical Wormable RCEs — CRITICAL · 2026-09-08
- Microsoft September 2026 Patch Tuesday — 999 CVEs, 3 actively exploited zero-days (CVE-2026-85880, CVE-2026-81963, CVE-2026-85046) — CRITICAL · 2026-09-08
Sources
Enriched from CVE.org, NVD, FIRST EPSS, GitHub Security Advisories. Last verified by Threadlinqs on . This product uses the NVD API but is not endorsed or certified by the NVD.