CVE-2021-32634: high-severity vulnerability in NationalSecurityAgency emissary
Deserialization of Untrusted Data in Emissary
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.2epss 1.3%
Emissary is a distributed, peer-to-peer, data-driven workflow framework. Emissary 6.4.0 is vulnerable to Unsafe Deserialization of post-authenticated requests to the [`WorkSpaceClientEnqueue.action`](https://github.com/NationalSecurityAgency/emissary/blob/30c54ef16c6eb6ed09604a929939fb9f66868382/src/main/java/emissary/server/mvc/internal/WorkSpaceClientEnqueueAction.java) REST endpoint. This issue may lead to post-auth Remote Code Execution. This issue has been patched in version 6.5.0. As a workaround, one can disable network access to Emissary from untrusted sources.
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:H
Affected products
NationalSecurityAgency · emissaryRelated CVEs — NationalSecurityAgency emissary
In the same product, most dangerous first.
CVE-2021-32647HIGHPost-authentication Remote Code Execution (RCE) in emissary:emissaryEPSS 2.9%CVE-2021-32639HIGHServer-Side Request Forgery (SSRF) in emissary:emissaryEPSS 1.4%CVE-2026-35582HIGHEmissary has an OS Command Injection via Unvalidated IN_FILE_ENDING / OUT_FILE_ENDING in ExecutrixEPSS 0.9%CVE-2026-35581HIGHEmissary has a Command Injection via PLACE_NAME Configuration in ExecutrixEPSS 0.6%CVE-2026-35580CRITICALEmissary has GitHub Actions Shell Injection via Workflow InputsEPSS 0.6%CVE-2026-54442MEDIUMNationalSecurityAgency/emissary: Incomplete fix for CVE-2026-35571: SSRFEPSS 0.4%