Deserialization of Untrusted Data in emissary - CVE-2021-32634

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Main Vulnerability Database Vulnerabilities #VU125041

Deserialization of Untrusted Data in emissary - CVE-2021-32634

Published: May 21, 2021 / Updated: April 7, 2026


Vulnerability identifier: #VU125041
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-32634
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
emissary
Software vendor:
National Security Agency

Description

The vulnerability allows a remote user to execute arbitrary code.

The vulnerability exists due to deserialization of untrusted data in the WorkSpaceClientEnqueue.action REST endpoint when processing post-authenticated requests. A remote privileged user can send a specially crafted serialized request to execute arbitrary code.

Since version 6.3.0, the endpoint is protected against CSRF attacks, which reduces the impact of the vulnerability.


Remediation

Install security update from vendor's website.

External links