What is CVE-2025-5277?

CVE-2025-5277 is a critical-severity vulnerability in Alexei-Led Aws-Mcp-Server, classified under OS Command Injection. CVSS score: 9.6/10. Published 2025-05-28.

How severe is CVE-2025-5277?

Critical severity. CVSS v3 base score is 9.6 out of 10.

Is CVE-2025-5277 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Alexei-Led Aws-Mcp-Server

CVE-2025-5277

aws-mcp-server MCP server is vulnerable to command injection. An attacker can craft a prompt that once accessed by the MCP client will run arbitrary commands on the host system.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.013 (66.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

Affected products

Alexei-led Aws-mcp-server — versions 0

Weakness classification (CWE)

CWE-78 — OS Command Injection

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

Frequently asked questions

What is CVE-2025-5277?: CVE-2025-5277 is a critical-severity vulnerability in Alexei-Led Aws-Mcp-Server, classified under OS Command Injection. CVSS score: 9.6/10. Published 2025-05-28.
How severe is CVE-2025-5277?: Critical severity. CVSS v3 base score is 9.6 out of 10.
Is CVE-2025-5277 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.