What’s Vulnerable › Vulnerabilities

CVE-2019-25327: Prime95 Version 29.8 build 6 - Buffer Overflow (SEH)

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-12 · updated 2026-06-17
• Weakness: CWE-122

Description

Prime95 version 29.8 build 6 contains a buffer overflow vulnerability in the user ID input field that allows remote attackers to execute arbitrary code. Attackers can craft a malicious payload and paste it into the PrimeNet user ID and proxy host fields to trigger a bind shell on port 3110.

Affected products

• Mersenne Research, Inc Prime95: 29.8

References

• https://www.exploit-db.com/exploits/47802
• https://www.mersenne.org
• https://www.vulncheck.com/advisories/prime-version-build-buffer-overflow-seh

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