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CVE-2026-6350: Openfind｜MailGates/MailAudit - Stack-based Buffer Overflow

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-16 · updated 2026-10-26
• Weakness: CWE-121

Description

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.

Affected products

• Openfind MailAudit: from 6.0 before 6.1.10.054; from 5.0 before 5.2.10.099 — fixed in 5.2.10.099, 6.1.10.054
• Openfind MailGates: from 6.0 before 6.1.10.054; from 5.0 before 5.2.10.099 — fixed in 5.2.10.099, 6.1.10.054

How to fix

Upgrade to a fixed version: Openfind MailAudit 5.2.10.099, 6.1.10.054; Openfind MailGates 5.2.10.099, 6.1.10.054. Check the vendor advisory for mitigations.

References

• https://www.twcert.org.tw/en/cp-139-10843-9ff91-2.html
• https://www.twcert.org.tw/tw/cp-132-10844-1405d-1.html

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