What is CVE-2026-6350?

CVE-2026-6350 is a critical-severity vulnerability in Openfind Mailaudit, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-04-16.

How severe is CVE-2026-6350?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Openfind Mailaudit

CVE-2026-6350

MailGates/MailAudit developed by Openfind has a Stack-based Buffer Overflow vulnerability, allowing unauthenticated remote attackers to control the program's execution flow and execute arbitrary code.

Vulnerability class: Buffer Overflow

Published 2026-04-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.010 (60.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 60.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.010 · change: +0.002

Affected products

Openfind Mailaudit — versions 6.0, 5.0
Openfind Mailgates — versions 6.0, 5.0

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

www.twcert.org.tw/tw/cp-132-10844-1405d-1.html (third-party-advisory)
www.twcert.org.tw/en/cp-139-10843-9ff91-2.html (third-party-advisory)

Frequently asked questions

What is CVE-2026-6350?: CVE-2026-6350 is a critical-severity vulnerability in Openfind Mailaudit, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-04-16.
How severe is CVE-2026-6350?: Critical severity. CVSS v3 base score is 9.8 out of 10.