What’s Vulnerable › Vulnerabilities

CVE-2023-4494: Easy Chat Server Stack-based buffer overflow vulnerability

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-10-04 · updated 2026-06-17
• Weakness: CWE-119

Description

Stack-based buffer overflow vulnerability in Easy Chat Server 3.1 version. An attacker could send an excessively long username string to the register.ghp file asking for the name via a GET request resulting in arbitrary code execution on the remote machine.

Affected products

• EFS Software Easy Chat Server: 3.1

References

• https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-efs-software-products
• https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-efs-software-products

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