01 Record
CVE-2026-105789
Microsoft UFO: Arbitrary file write in the Linux MCP `execute_command` tool
MediumPUBLISHEDCNA: GitHub_M
CNA base score5.4 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:L
02 Description
Microsoft UFO: Arbitrary file write in the Linux MCP `execute_command` tool
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.70% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 52.8% of scored records. A rank, not a probability.
- NVD base score
- 5.4 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:L
- NVD analysis status
- Deferred. NVD last modified this record on 2026-10-06.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-10-06 14:07Z22 DAYS AGO
- Last updated
- 2026-10-06 14:47Z22 DAYS AGO
- Reserved
- 2026-10-05
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 5.4)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:L
- Weaknesses
- Data version
- 5.2
- Document digest
- 73117003b9ba49218524032d984c60f8fde731d63ba9b96bbcf0c73951b0997d
05 Affected products
VendorProductVersionsPlatforms