CVE-2025-14204Public exploitNetwork attack vector

Remote command execution via unsanitized authorization URL

Published Dec 7, 2025 · Updated Dec 8, 2025

OS command injection in TykoDev TykoTech Fork 0.1 allows remote attackers to execute commands through a malicious OAuth endpoint. The redirectToAuthorization function passes the server-supplied authorizationUrl from OAuth discovery to an insecure open call without validation. Exploitation requires a user to connect the desktop client to an attacker-controlled Streamable HTTP MCP server, after which commands run on the client host.

CVSS severity6.3
Medium
EPSS probability1.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in TykoDev TykoTech Fork 0.1 allows remote attackers to execute commands through a malicious OAuth endpoint. The redirectToAuthorization function passes the server-supplied authorizationUrl from OAuth discovery to an insecure open call without validation. Exploitation requires a user to connect the desktop client to an attacker-controlled Streamable HTTP MCP server, after which commands run on the client host.

The record

CVE
CVE-2025-14204
Published
Dec 7, 2025
Updated
Dec 8, 2025
Vendor
TykoDev
Product
TykoTech Fork
Classifications
CWE-78, CWE-77, T1202
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 8, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

TykoDev · TykoTech Forkversion=0.1

Published CVSS scores

2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1202Indirect Command Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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