CVE-2019-25741

Mobatek MobaXterm 12.1 Buffer Overflow via Sessions File

CVSS 9.3 CRITICALEPSS 0.6%CWE-120

Vexday Risk Score

48Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

CVSS 9.3EPSS 0.6%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Lifecycle

04 Jun 2026Published on NVD

Recommendation: Plan a near-term fix — a public PoC already exists.

Mobatek MobaXterm 12.1 contains a structured exception handling (SEH) based buffer overflow vulnerability in the username field of session files that allows remote attackers to execute arbitrary code. Attackers can craft a malicious MobaXterm sessions file with overflow data that triggers the vulnerability when imported and executed, enabling reverse shell execution with user privileges.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Affected products

Mobatek · Mobatek MobaXterm

public PoCs found — 1

cve_referencewww.exploit-db.com/exploits/47429unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

Want to know if your infrastructure is exposed to this?

Talk to TrueHacking →

References

https://download.mobatek.net/1112019010310554/MobaXterm_Portable_v11.1.zip https://www.exploit-db.com/exploits/47429 https://www.vulncheck.com/advisories/mobatek-mobaxterm-buffer-overflow-via-sessions-file