What is CVE-2026-85888?

CVE-2026-85888 is a high-severity vulnerability in Microsoft SQL Server 2017 For X64-Based Systems (Cu31), classified under Out-of-bounds Read. CVSS score: 7.7/10. Published 2026-10-13.

How severe is CVE-2026-85888?

High severity. CVSS v3 base score is 7.7 out of 10.

Out-of-bounds Read in Microsoft SQL Server 2017 For X64-Based Systems (Cu31)

CVE-2026-85888

Out-of-bounds read in SQL Server allows an authorized attacker to disclose information over a network.

Vulnerability class: Buffer Overflow

Published 2026-10-13 · last modified 2026-10-13.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85888 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-85888?: CVE-2026-85888 is a high-severity vulnerability in Microsoft SQL Server 2017 For X64-Based Systems (Cu31), classified under Out-of-bounds Read. CVSS score: 7.7/10. Published 2026-10-13.
How severe is CVE-2026-85888?: High severity. CVSS v3 base score is 7.7 out of 10.