# CVE-2025-6514

> As of 2026-11-11, CVE-2025-6514 is a CRITICAL-severity vulnerability, CVSS v3.1 9.6, EPSS 77.0% (99.5th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2025-6514, most recently “MCP Server Supply Chain Weaknesses (uvx/npx Unpinned Dependencies) Could Expose API Keys and Administrator Credentials”.

**Last updated:** 2026-11-11

## What is CVE-2025-6514?

mcp-remote is exposed to OS command injection when connecting to untrusted MCP servers due to crafted input from the authorization_endpoint response URL

The record classifies CVE-2025-6514 under weakness class [CWE-78](https://intel.threadlinqs.com/cwe/CWE-78). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs a user to take an action first, and has high impact on confidentiality, integrity, availability. The identifier was first published 491 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 9.6 — CRITICAL (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H`)
- **EPSS (FIRST):** 77.0% probability of exploitation in the next 30 days, higher than 99.5% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 10/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2025-07-09

## Is CVE-2025-6514 being exploited?

Weaponised exploit code for CVE-2025-6514 is publicly available. 2 public proof-of-concept repositories are tracked for this identifier. It currently carries a trending score of 38 in the Threadlinqs vulnerability feed.

- [Cyberency/CVE-2025-6514](https://github.com/Cyberency/CVE-2025-6514) (github)
- [trickest/cve](https://github.com/trickest/cve/blob/main/2025/CVE-2025-6514.md) (trickest)

## Affected products and versions

Affected software packages:

- `npm:mcp-remote` — patched in 0.1.16

## How to fix CVE-2025-6514

Fixed versions are recorded for 1 package: npm:mcp-remote 0.1.16. Patch reference: [https://github.com/geelen/mcp-remote/commit/607b226a356cb61a239ffaba2fb3db1c9dea4bac](https://github.com/geelen/mcp-remote/commit/607b226a356cb61a239ffaba2fb3db1c9dea4bac). Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.

## Threat activity tracking CVE-2025-6514

1 tracked threat in the Threadlinqs corpus references CVE-2025-6514, either in the campaign’s CVE list or as an indicator on the campaign record.

- [MCP Server Supply Chain Weaknesses (uvx/npx Unpinned Dependencies) Could Expose API Keys and Administrator Credentials](https://intel.threadlinqs.com/threat/TL-2026-5788) — MEDIUM · 2026-11-11

## Sources

Enriched from CVE.org, NVD, FIRST EPSS, GitHub Security Advisories, public proof-of-concept repositories. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [github.com — patch](https://github.com/geelen/mcp-remote/commit/607b226a356cb61a239ffaba2fb3db1c9dea4bac)

**Technical analysis**

- [jfrog.com — technical description](https://jfrog.com/blog/2025-6514-critical-mcp-remote-rce-vulnerability)

**Third-party advisory**

- [research.jfrog.com — third party advisory](https://research.jfrog.com/vulnerabilities/mcp-remote-command-injection-rce-jfsa-2025-001290844/)

Canonical: https://intel.threadlinqs.com/cve/CVE-2025-6514
Every threat comes with one complete detection in Splunk SPL, Microsoft KQL and Sigma, free for everyone; a free account adds daily TL Creds to unlock the rest. Sign up free (Blue): https://threadlinqs.com/?modal=signup
Indicator values unlock with TL Creds (https://threadlinqs.com/tl-creds); MCP access for AI agents needs Purple: https://intel.threadlinqs.com/mcp