Prime95 29.4b7 contains a buffer overflow vulnerability in the PrimeNet connection dialog that allows local attackers to crash the application by supplying an excessively long string in the optional proxy password field. Attackers can trigger a denial of service by entering a 6000-byte payload into the proxy password parameter, causing the application to crash when processing the connection settings.

Attack Vector Local

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Mersenne Prime95 affected
Version Status Constraints
29.4b7 affected —

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Project Subscriptions

Vendors Products
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Prime95 Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
http://www.mersenne.org cve-icon
http://www.mersenne.org/ftp_root/gimps/p95v294b7.win32.zip cve-icon
https://www.exploit-db.com/exploits/45226 cve-icon
https://www.vulncheck.com/advisories/prime95-29-4b7-denial-of-service-via-proxy-password-field cve-icon
History

Sun, 26 Apr 2026 13:30:00 +0000

Type Values Removed Values Added
Description Prime95 29.4b7 contains a buffer overflow vulnerability in the PrimeNet connection dialog that allows local attackers to crash the application by supplying an excessively long string in the optional proxy password field. Attackers can trigger a denial of service by entering a 6000-byte payload into the proxy password parameter, causing the application to crash when processing the connection settings.
Title Prime95 29.4b7 Denial of Service via Proxy Password Field
First Time appeared Mersenne
Mersenne prime95
Weaknesses CWE-120
CPEs cpe:2.3:a:mersenne:prime95:29.4b7:*:*:*:*:*:*:*
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': 6.2, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-04-26T13:19:22.545Z

Reserved: 2026-04-26T13:11:04.130Z

Link: CVE-2018-25293

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses