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Vulnerability record · CVE-2019-25327 · published 12 February 2026

CVE-2019-25327: Heap-based buffer overflow vulnerability

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.

8.4 CVSS 4.0 High EPSS 0.47% · top 61.8% CWE-122 · Heap-based buffer overflow Deferred
8.4CVSS 4.0 base score
0.47%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

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.

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/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/47802
https://www.mersenne.org
https://www.vulncheck.com/advisories/prime-version-build-buffer-overflow-seh

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Source: NIST National Vulnerability Database (record CVE-2019-25327), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.