CVE-2018-25299 HIGH

CVE-2018-25299: Prime95 29.4b8 Local Buffer Overflow via SEH

Vendor Mersenne
Product Prime95
Weakness CWE-120
Published April 29, 2026
Last update April 30, 2026

CVSS base score

8.6/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

Prime95 29.4b8 contains a local buffer overflow vulnerability that allows attackers to execute arbitrary code by exploiting structured exception handling (SEH) mechanisms. Attackers can inject malicious payload through the optional proxy hostname field in the PrimeNet connection settings to trigger the overflow and execute system commands.

Key dates

02Disclosure timeline

April 29, 2026 CVE published
April 30, 2026 Record updated