CVE-2026-105793
CRITICAL 9.1Microsoft UFO is an open-source framework for intelligent automation across devices and platforms. Prior to 3.0.9, the press_key tool in ufo/client/mcp/http_servers/mobile_mcp_server.py accepts a free-form key_code parameter and passes it to `adb shell input keyevent`. The adb client joins the arguments into a remote command string that the Android shell reparses, allowing an authenticated Mobile MCP caller to execute additional commands as the Android shell user on an authorized connected device. Exploitation requires a valid UFO_MCP_API_KEY, adb on the host, and a reachable authorized device, and it does not establish host operating-system execution, Android root execution, or access beyond the Android shell-user privileges. This issue is fixed in version 3.0.9.
Severe if exploited (CVSS 9.1), but no known exploitation and low modeled probability. Patch on a normal cadence.
Exploitation likelihood
0.9%chance of exploitation in 30 days · 58th percentile
Impact if exploited
9.1CVSS 3.1 · CRITICAL
- ConfidentialityLow
- IntegrityHigh
- AvailabilityLow
What an attacker needs
- ✓Access: Reachable over the network — no local access needed
- ⚠Privileges: Requires a low-privilege account
- ✓User interaction: No user interaction needed
- ✓Complexity: No special conditions — reliably repeatable
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept
No public PoC is currently catalogued.
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Data snapshot:
Weakness (CWE)
- CWE-78: : Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:L
References and research data (JSON)
All CVSS metrics
- CRITICAL 9.1 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:L - CRITICAL 9.1 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:L
References
Exploit-tagged references (not proof of a PoC)
- https://github.com/microsoft/UFO/security/advisories/GHSA-5cjx-4375-4877 CVE record · GitHub_M · Updated 2026-10-06T14:12:17.255Z
CVE record · CISA-ADP · Updated 2026-10-06T15:01:03.322Z
NVD · CVE-2026-105793 · Updated 2026-10-06T16:17:05.703
Advisories
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-93421 EUVD · EUVD-2026-93421
Technical & other
- https://github.com/microsoft/UFO/commit/a538791043327a0c33731d5be428867a5fd71794 CVE record · GitHub_M · Updated 2026-10-06T14:12:17.255Z
NVD · CVE-2026-105793 · Updated 2026-10-06T16:17:05.703 - https://github.com/microsoft/UFO/releases/tag/v3.0.9 CVE record · GitHub_M · Updated 2026-10-06T14:12:17.255Z
NVD · CVE-2026-105793 · Updated 2026-10-06T16:17:05.703