by Kastro
Paper/Archive/CVE-2025-34127

CVE-2025-34127

Achat Software Achat Chat Server — Achat v0.150 SEH Buffer Overflow via UDP

EPSS 2%public exploitCVSS 9.3
critical.is priorityof 100
54
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 79.4.794 × 2015.9Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

A stack-based buffer overflow exists in Achat v0.150 in its default configuration. By sending a specially crafted message to the UDP port 9256, an attacker can overwrite the structured exception handler (SEH) due to insufficient bounds checking on user-supplied input leading to remote code execution.

Affected

ProductAffectedFixed inSource
Achat Chat Server0.150–CNA

Scores by source

VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploitraw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/misc/achat_bof.rbwriteupvulncheck.com/advisories/achat-seh-buffer-overflowexploitexploit-db.com/exploits/36056