Vulnerability details
CVE-2026-112161
Mobatek MobaXterm
Lack of integrity checks in Mobatek’s MobaXterm
CVSS 4.0
8.5High
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.5High | 4.0 | CVEProject cvelistV5 (CNA) (INCIBE) | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Mobatek | MobaXterm | 26.4 GA | CVEProject cvelistV5 (CNA) |
References and advisories
1
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Details
- Published
- 2026-10-19
- Last updated
- 2026-10-20
- State
- Published
- Assigner (CNA)
- INCIBE
Exploit prediction (EPSS)
0.07%
Probability of exploitation in 30 days
0.1%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-345Insufficient Verification of Data Authenticity