Critical severity · published Feb 12, 2026
CVE-2019-25327
Prime95 Version 29.8 build 6 - Buffer Overflow (SEH)
9.8
CVSS
0.5%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 44% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PR
Prime95 · Mersenne Research, Inc
29.8 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-25327
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-25327
www.exploit-db.com
https://www.exploit-db.com/exploits/47802
www.mersenne.org
https://www.mersenne.org
www.vulncheck.com
https://www.vulncheck.com/advisories/prime-version-build-buffer-overflow-seh