Read the docs
TI-2018-15524 Aliases CVE-2018-25299GHSA-vp92-854v-9rq4

Prime95 29.4b8 Local Buffer Overflow via SEH

Priority HIGH 72CWE-120Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00162 5th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MersennePrime9529.4b8—No fix listedCNA
  • Prime95 VendorMersenne Affected 29.4b8 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-25299
  2. 2026-10-03 Alias added: GHSA-vp92-854v-9rq4

References

Exploit 1

Other 2

  • TI-2018-15518 Prime95 29.4b7 Denial of Service via Proxy Password Field CVSS 4.0MEDIUM 6.9
  • TI-2022-12368 Prime95 30.7 build 9 suffers from a Buffer Overflow vulnerability that could lead to Remote Code Execution. CVSS 3.1CRITICAL 9.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences