Cyber Resilience

CVE-2021-21941

CriticalPublic PoC

Published: 12 October 2021

Published
12 October 2021
Modified
21 November 2024
KEV Added
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Patch
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CVSS Score v3.1 9.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS Score 0.0165 82.4th percentile
Risk Priority 19 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-21941 is a critical-severity Context Switching Race Condition (CWE-368) vulnerability in Anker Eufy Homebase 2 Firmware. Its CVSS base score is 9.0 (Critical).

Operationally, ranked in the top 17.6% 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

A use-after-free vulnerability exists in the pushMuxer CreatePushThread functionality of Anker Eufy Homebase 2 2.1.6.9h. A specially-crafted set of network packets can lead to remote code execution.

CWE(s)
CWE-368CWE-416

Related Threats

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

Affected Assets

anker
eufy homebase 2 firmware
2.1.6.9h

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SI-16 Memory Protection
addresses: CWE-416

Use-after-free exploits that achieve arbitrary code execution are blocked or significantly hardened by non-executable pages and ASLR.

References