CVE-1999-0399: The DCC server command in the Mirc 5.5 client doesn't filter characters from file names properly, allowing remote attack

Published n/a Updated 2026-08-21T04:30:41.719Z

Summary

The DCC server command in the Mirc 5.5 client doesn't filter characters from file names properly, allowing remote attackers to place a malicious file in a different location, possibly allowing the attacker to execute commands.

Severity

UNKNOWN

Source Attribution

Source: NVD · Updated: 2026-08-21T04:30:41.719Z · Confidence: high

Impact

Based on CVSS vector: n/a — assess confidentiality, integrity, and availability impact via the official vector documentation.

Affected Software

Fix

Upgrade affected software to the fixed version identified above. Apply vendor patches and monitor advisories before exposed systems go unpatched.

References