CVE Catalog

CVE-2026-81849

HighCVSS 8.8
Published: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.57%

44th percentile - higher than 44% of all known CVEs

Summary

Improper limitation of a pathname to a restricted directory in the aws:downloadContent plugin in amazon-ssm-agent before 3.3.4515.0 might allow an authenticated remote user whose ssm:SendCommand permission is restricted to the AWS-DownloadContent document, to write arbitrary files outside the intended download directory with root privileges, via crafted object keys in the S3 source the document is directed to retrieve. This issue may lead to arbitrary code execution as root if specific sensitive files are overwritten.

Risk Assessment

The risk includes privilege escalation to root and arbitrary code execution on servers, potentially leading to full system compromise and data integrity violation.

Recommendation

It is recommended to upgrade amazon-ssm-agent to version 3.3.4515.0 or later and restrict user permissions to the AWS-DownloadContent document to minimize risk.

Related vulnerabilities

Original NVD description (English source)

Improper limitation of a pathname to a restricted directory in the aws:downloadContent plugin in amazon-ssm-agent before 3.3.4515.0 might allow an authenticated remote user whose ssm:SendCommand permission is restricted to the AWS-DownloadContent document, to write arbitrary files outside the intended download directory with root privileges, via crafted object keys in the S3 source the document is directed to retrieve. This issue may lead to arbitrary code execution as root if specific sensitive files are overwritten. To remediate this issue, customers should upgrade amazon-ssm-agent to version 3.3.4515.0 or later.

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