CVE-2019-25741

9.3 criticalEPSS 0.6%

Critical (9.3). EPSS 0.6% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

9.3 critical

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

CVSS 3.1

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 50% of CVEs (scores of 2026-10-31)
CWE: CWE-120
Published: 2026-06-04
Modified: 2026-07-22
Record from: the NVD, synced 2026-10-19

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

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