CVE-2026-77488
Microsoft SQL Server Information Disclosure Vulnerability
CVE-2026-77488 is a medium vulnerability (CVSS 5.5) in Microsoft Sql Server 2017 (cu 31), published September 8, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.40%, the 35th percentile. No source names a fixed version.
- Severity
- 5.5 MediumCVSS 3.1, CVE List
- Exploit chance
- 0.40%EPSS, 35th percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
- No fix listedNo source names one
Description
Integer underflow (wrap or wraparound) in SQL Server allows an authorized attacker to disclose information locally.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
Affected products
- microsoft sql server 2017 (cu 31)
- microsoft sql server 2017 (gdr)
- microsoft sql server 2019 (cu 32)
- microsoft sql server 2019 (gdr)
- microsoft sql server 2022 (cu 26)
- microsoft sql server 2022 (gdr)
- microsoft sql server 2025 (cu8)
- microsoft sql server 2025 for x64-based systems (gdr)
- microsoft sql server 2017
- microsoft sql server 2019
- microsoft sql server 2022
- microsoft sql server 2025
What each source reports
CVE List Score used
Microsoft SQL Server Information Disclosure Vulnerability
Integer underflow (wrap or wraparound) in SQL Server allows an authorized attacker to disclose information locally.
- Record
CVE-2026-77488- CVSS 3.1
- 5.5 Medium
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 - Weakness
- CWE-191
- Updated
- 2026-11-10
EUVDEUVD-2026-73789
Integer underflow (wrap or wraparound) in SQL Server allows an authorized attacker to disclose information locally.
- Record
EUVD-2026-73789- CVSS 3.1
- 5.5 Medium
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 - Updated
- 2026-11-10
GitHub AdvisoriesGHSA-2p2q-6jp7-fc7g
Integer underflow (wrap or wraparound) in SQL Server allows an authorized attacker to disclose...
Integer underflow (wrap or wraparound) in SQL Server allows an authorized attacker to disclose information locally.
- Record
GHSA-2p2q-6jp7-fc7g- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-191
- Updated
- 2026-11-02
NVD
Integer underflow (wrap or wraparound) in SQL Server allows an authorized attacker to disclose information locally.
- Record
CVE-2026-77488- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-191
- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | CVE List | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.