What is CVE-2026-85969?

CVE-2026-85969 is a high-severity vulnerability in Progress Software Corporation Marklogic Server, classified under Out-of-bounds Write. CVSS score: 7.1/10. Published 2026-10-12.

How severe is CVE-2026-85969?

High severity. CVSS v3 base score is 7.1 out of 10.

Buffer overflow in Progress Software Corporation Marklogic Server

CVE-2026-85969

Progress MarkLogic Server 12.x releases before 12.1.0 and 11.x releases before 11.3.7 contain an out-of-bounds write vulnerability in certain language-processing functionality. A remote authenticated attacker could exploit this vulnerability to cause server instability or limited modification of data.

Vulnerability class: Buffer Overflow

Published 2026-10-12.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H.

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

Progress Software Corporation Marklogic Server

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

community.progress.com/s/article/Marklogic-Critical-Security-Alert-Bulletin-Oct… (vendor-advisory)

Frequently asked questions

What is CVE-2026-85969?: CVE-2026-85969 is a high-severity vulnerability in Progress Software Corporation Marklogic Server, classified under Out-of-bounds Write. CVSS score: 7.1/10. Published 2026-10-12.
How severe is CVE-2026-85969?: High severity. CVSS v3 base score is 7.1 out of 10.