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CVE-1999-0399

• Severity: high (CVSS 7.5 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 1999-01-01 · updated 2026-06-16

Description

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.

Affected products

• Khaled Mardam-Bey Mirc: 5.5

References

• https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0399
• https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0399

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