CISA-confirmed known exploited vulnerability

CVE-2017-6327

Symantec Messaging Gateway Remote Code Execution Vulnerability

Symantec · Symantec Messaging Gateway

Vulnerability details

Symantec Messaging Gateway contains an unspecified vulnerability which can allow for remote code execution. With the ability to perform remote code execution, an attacker may also desire to perform privilege escalating actions.

Added to CISA KEV: 2021-11-03

Ransomware campaign use: Unknown

CISA due date: 2022-05-03

Defensive guidance from CISA

Apply updates per vendor instructions.

This is the source's required-action field, not an independently validated patch procedure. Refer to the vendor for exact affected versions and fixes.

Source catalog date: 2026-11-06T19:44:45.1797Z · Last retrieved: 2026-11-06 21:02:26 UTC

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