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Vulnerability record · CVE-2018-25299 · published 29 April 2026

CVE-2018-25299: Classic buffer overflow vulnerability

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.

8.6 CVSS 4.0 High EPSS 0.16% · top 95.3% CWE-120 · Classic buffer overflow Awaiting Analysis
8.6CVSS 4.0 base score
0.16%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://www.exploit-db.com/exploits/44649
https://www.mersenne.org/
https://www.mersenne.org/download/#download
https://www.vulncheck.com/advisories/prime95-29-4b8-local-buffer-overflow-via-seh

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Source: NIST National Vulnerability Database (record CVE-2018-25299), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.