CVE-2026-77488

MEDIUM

MEDIUM Priority: 0.02 BB Relevance: 36/100

Published: 2026-09-08 Modified: 2026-10-30 First seen: 2026-10-30 Status: active

Low Complexity No Interaction Conf. Impact

AV: Local

AC: Low

PR: Low

UI: None

S: Unchanged

C: High

I: None

A: None

Integer underflow (wrap or wraparound) in SQL Server allows an authorized attacker to disclose information locally.

Vendor	Product	Version
Microsoft	Microsoft SQL Server 2017 (CU 31)	14.0.0 < 14.0.3550.4
Microsoft	Microsoft SQL Server 2017 (GDR)	14.0.0 < 14.0.2130.4
Microsoft	Microsoft SQL Server 2019 (CU 32)	15.0.0.0 < 15.0.4490.9
Microsoft	Microsoft SQL Server 2019 (GDR)	15.0.0 < 15.0.2190.7
Microsoft	Microsoft SQL Server 2022 (CU 26)	16.0.0.0 < 16.0.4275.2
Microsoft	Microsoft SQL Server 2022 (GDR)	16.0.0 < 16.0.1200.5
Microsoft	Microsoft SQL Server 2025 (CU8)	17.0.0.0 < 17.0.4085.5
Microsoft	Microsoft SQL Server 2025 for x64-based Systems (GDR)	17.0.1050.2 < 17.0.1135.8

vendor-advisory patch

36 / 100

✓ Low complexity
✓ No user interaction

5.5 / 10.0 v3.1

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

0.40%

Raw Score 0.004040

Percentile 34.7%

Date 2026-10-30

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