Cyber Resilience

CVE-2021-23543

CriticalPublic PoC

Published: 10 January 2022

Published
10 January 2022
Modified
21 November 2024
KEV Added
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Patch
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CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0056 68.6th percentile
Risk Priority 20 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-23543 is a critical-severity Prototype Pollution (CWE-1321) vulnerability in Agoric Realms-Shim. Its CVSS base score is 9.8 (Critical).

Operationally, ranked in the top 31.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

All versions of package realms-shim are vulnerable to Sandbox Bypass via a Prototype Pollution attack vector.

CWE(s)
CWE-1321

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

agoric
realms-shim
all versions

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References