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CRITICAL

CVE-2025-5277

CVSS v3

9.6

CRITICAL

EPSS Score

1.2 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

none

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2025-5277 yet.

Full record on NVD

Description

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.

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Published
2025-05-28
Last Modified
2026-04-15

Frequently asked questions

What is 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.

Is CVE-2025-5277 actively exploited?

Active exploitation of CVE-2025-5277 has not been confirmed. Its EPSS score was 1.2% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-5277?

CVE-2025-5277 has a CVSS v3 base score of 9.6 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

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