CVE-2026-112161
MobaXterm Personal Edition (Portable) 26.4 GA extracts the CygUtils64.plugin file without first…
- Risk score
- 51/100
- CVSS
- 8.5 v4.0
- Exploit chance (30 days)
- 0.1%
- Published
- 19 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- MobaXterm Personal Edition (Portable) 26.4 GA extracts the CygUtils64.plugin file without first verifying its integrity. A local attacker with write permissions on this file can replace the ‘bin/cygwin1.dll’ library contained within it with a malicious library. When the victim opens a Local Shell session or uses a Cyg…
- Affected
- See advisory
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 8.5 high
References
Original description
MobaXterm Personal Edition (Portable) 26.4 GA extracts the CygUtils64.plugin file without first verifying its integrity. A local attacker with write permissions on this file can replace the ‘bin/cygwin1.dll’ library contained within it with a malicious library. When the victim opens a Local Shell session or uses a Cygwin-based function, the application extracts the component and loads the tampered library, executing code with the victim’s permissions. Exploitation requires write access to the plugin and does not, in itself, involve privilege escalation.
Last activity 19 Oct 2026. Patch Forecast updates every hour.