CVE-2019-25327 | Prime95 version 29.8 build 6 contains a buffer overflow vuln… | CVSS 9.8 CRITICAL

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.

Metadata

CVE ID: CVE-2019-25327
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-02-12 14:38 UTC
Published: 2026-02-12 22:48 UTC
Last updated: 2026-03-05 01:26 UTC
Primary CWE: CWE-122
Heap-based Buffer Overflow
Vendor / Product: Mersenne Research, Inc / Prime95
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
Mersenne Research, Inc	Prime95	—	29.8

Weakness (CWE)

CWE	Source	Description
CWE-122	cna	Heap-based Buffer Overflow

CVSS scores (2)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.4	HIGH	4.0	cna	CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References (3)

ExploitDB-47802 https://www.exploit-db.com/exploits/47802
Vendor Homepage https://www.mersenne.org
VulnCheck Advisory: Prime95 Version 29.8 build 6 - Buffer Overflow (SEH) https://www.vulncheck.com/advisories/prime-version-build-buffer-overflow-seh