Recorded 23 Oct 2026 at 08:31 UTC. This is what ChangeIntel recorded, including the title, summary, facts and links. It is not a statement of the source's current position. See the latest record.
Microsoft SQL Server Remote Code Execution Vulnerability
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.
What it said
- CVE
- CVE-2026-83945
- Severity
- Important
- CVSS base score
- 6.6
- CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
- Impact
- Remote Code Execution
- Exploitation detected
- Not reported by MSRC
- Publicly disclosed
- No
- Exploitability
- Exploitation Unlikely
- Component
- SQL Server
- Weakness
- CWE-122: Heap-based Buffer Overflow
- Issued by
- Microsoft
- Customer action
- Required: apply the update
- Affected products
- Microsoft SQL Server 2022 for x64-based Systems (CU27), Microsoft SQL Server 2022 for x64-based Systems (GDR), Microsoft SQL Server 2025 for x64-based Systems (CU8), Microsoft SQL Server 2025 for x64-based Systems (CU9), Microsoft SQL Server 2025 for x64-based Systems (GDR)
- Updates that fix it
- KB5126934: Microsoft SQL Server 2022 for x64-based Systems (CU27) (restart required); KB5126967: Microsoft SQL Server 2025 for x64-based Systems (CU9) (restart required); KB5128492: Microsoft SQL Server 2025 for x64-based Systems (GDR) (restart required); KB5128493: Microsoft SQL Server 2022 for x64-based Systems (GDR) (restart required)
- CISA KEV
- Unknown: catalog evidence is incomplete or retained
- EPSS
- 0.4%; scored 22 Oct 2026
- Public exploit code
- Unknown: exploit-code evidence is incomplete or retained
- Published
- 13 Oct 2026 07:00 UTC
- Last revised
- 13 Oct 2026 07:00 UTC
- Revision note
- Information published.
Recorded links
Source evidence when recorded
- Microsoft security releases
- IncompleteRead 23 Oct 2026 at 08:14 UTC
- CISA KEV
- IncompleteRead 23 Oct 2026 at 08:14 UTC
- FIRST EPSS
- IncompleteRead 23 Oct 2026 at 08:14 UTC
- Public exploit code
- IncompleteRead 23 Oct 2026 at 08:14 UTC
Coverage describes the sources at this observation. A complete read then does not establish their current position.
What changed
First observed 14 Oct 2026- 23 Oct 2026 · 08:31:50 UTC Public exploit codeNo Nuclei template listed → Unknown: exploit-code evidence is incomplete or retained
- 23 Oct 2026 · 08:31:50 UTC CISA KEVNot listed in the collected catalog → Unknown: catalog evidence is incomplete or retained
- 23 Oct 2026 · 08:31:50 UTC Source coverage: public-exploit-codeCurrent → Incomplete
- 23 Oct 2026 · 08:31:50 UTC Source coverage: first-epssCurrent → Incomplete
- 23 Oct 2026 · 08:31:50 UTC Source coverage: cisa-kevCurrent → Incomplete
- 23 Oct 2026 · 08:31:50 UTC Source coverage: msrc-cvrfCurrent → Incomplete
- 22 Oct 2026 · 17:33:15 UTC EPSS0.4%; scored 21 Oct 2026 → 0.4%; scored 22 Oct 2026
- 21 Oct 2026 · 21:47:24 UTC EPSS0.4%; scored 20 Oct 2026 → 0.4%; scored 21 Oct 2026
- 20 Oct 2026 · 20:53:31 UTC EPSS0.4%; scored 19 Oct 2026 → 0.4%; scored 20 Oct 2026
- 19 Oct 2026 · 15:12:40 UTC EPSS0.4%; scored 18 Oct 2026 → 0.4%; scored 19 Oct 2026
- 18 Oct 2026 · 14:54:30 UTC EPSS0.4%; scored 16 Oct 2026 → 0.4%; scored 18 Oct 2026
- 18 Oct 2026 · 14:54:30 UTC Link: October 2026/security?release=2026-Oct#cves
Show 3 more recent changes
- 16 Oct 2026 · 16:13:25 UTCEPSS 0.4%; scored 15 Oct 2026 → 0.4%; scored 16 Oct 2026
- 15 Oct 2026 · 21:30:54 UTCEPSS 0.4%; scored 14 Oct 2026 → 0.4%; scored 15 Oct 2026
- 15 Oct 2026 · 01:07:54 UTCEPSS Not scored → 0.4%; scored 14 Oct 2026
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