CVE Catalog

CVE-2026-18654

MediumCVSS 6.8
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.29%

21th percentile - higher than 21% of all known CVEs

Summary

Key exchange without entity authentication in the EMR SSH helper commands in Amazon AWS CLI before 1.45.28 and AWS CLI v2 before 2.35.3 might allow man-in-the-middle attackers to intercept SSH sessions and file transfers via network positioning between the client and the EMR cluster endpoint.

Risk Assessment

An attacker can intercept and modify data during SSH sessions and file transfers, compromising data confidentiality and integrity.

Recommendation

Upgrade AWS CLI to version 1.45.28 or later (for v1) and 2.35.3 or later (for v2).

Related vulnerabilities

Original NVD description (English source)

Key exchange without entity authentication in the EMR SSH helper commands in Amazon AWS CLI before 1.45.28 and AWS CLI v2 before 2.35.3 might allow man-in-the-middle attackers to intercept SSHsessions and file transfers via network positioning between the client and the EMR cluster endpoint. To remediate this issue, users should upgrade to AWS CLI v1 1.45.28 or later, or AWS CLI v2 2.35.3 or later.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS