Deserialization of Untrusted Data in emissary - CVE-2021-32634
Published: May 21, 2021 / Updated: April 7, 2026
Vulnerability identifier: #VU125041
CSH Severity: Low
CVSS v4: 5.9 [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]
CVE-ID: CVE-2021-32634
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
emissary
How to mitigate CVE-2021-32634
Install security update from vendor's website.
emissary - update to 6.6.0