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.

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Fixes

Solution

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Workaround

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History

Thu, 30 Apr 2026 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 29 Apr 2026 20:00:00 +0000

Type Values Removed Values Added
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.
Title Prime95 29.4b8 Local Buffer Overflow via SEH
First Time appeared Mersenne
Mersenne prime95
Weaknesses CWE-120
CPEs cpe:2.3:a:mersenne:prime95:29.4b8:*:*:*:*:*:*:*
cpe:2.3:a:mersenne:prime95:30.7:-:*:*:*:*:*:*
cpe:2.3:a:mersenne:prime95:30.7:build9:*:*:*:*:*:*
Vendors & Products Mersenne
Mersenne prime95
References
Metrics cvssV3_1

{'score': 8.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.6, '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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-04-30T13:59:05.699Z

Reserved: 2026-04-29T12:00:33.310Z

Link: CVE-2018-25299

cve-icon Vulnrichment

Updated: 2026-04-30T13:58:45.407Z

cve-icon NVD

Status : Received

Published: 2026-04-29T20:16:25.007

Modified: 2026-04-29T20:16:25.007

Link: CVE-2018-25299

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-30T04:00:15Z

Weaknesses