Is CVE-2025-5277 in the CISA KEV catalog?

No. CVE-2025-5277 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-5277?

CVE-2025-5277 has a CVSS v3 base score of 9.6 (CRITICAL).

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

CVE-2025-5277 has an EPSS score of 1.26% (66th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2025-5277

CRITICAL

9.6

CVSS v3

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.

CWE-78OS Command Injection

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Exploit Intelligence

1.26%probability of exploitation in 30 days

66thpercentile

Moderate risk: more likely to be exploited than 66% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-05-28.