Command execution in python-utcp allows attackers to achieve remote code execution when…
Priority HIGH 68CWE-501Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
The vulnerability arises when a client fetches a tools’ JSON specification, known as a Manual, from a remote Manual Endpoint. While a provider may initially serve a benign manual (e.g., one defining an HTTP tool call), earning the clients’ trust, a malicious provider can later change the manual to exploit the client.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00264 18th percentileScored 2026-11-07
Fix Fixed utcp: 1.1.0utcp (PyPI): 1.1.0
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | utcp | before 1.1.0 | 1.1.0 | Patch available | CNA |
| — | utcp (PyPI) | before 1.1.0 | 1.1.0 | Patch available | GHSA-75mj-4g74-9rg2 |
- utcp Vendor— Affected before 1.1.0 Fixed in 1.1.0 Patch available CNA
- utcp (PyPI) Vendor— Affected before 1.1.0 Fixed in 1.1.0 Patch available GHSA-75mj-4g74-9rg2
Remediation
- Fix · CNA utcp Fixed in 1.1.0
- Fix · GHSA-75mj-4g74-9rg2 utcp (PyPI) Fixed in 1.1.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-14542
- 2026-10-03 Alias added: GHSA-75mj-4g74-9rg2
References
Advisory 2
Sources
- CVE-2025-14542 · CVE Program
- CVE-2025-14542 · NVD
- FIRST EPSS
- GHSA-75mj-4g74-9rg2 · GitHub Advisory Database · CC BY 4.0
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