Cyber Resilience

CVE-2020-22884

CriticalPublic PoC

Published: 13 July 2021

Published
13 July 2021
Modified
21 November 2024
KEV Added
—
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 0.0311 87.1th percentile
Risk Priority 21 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2020-22884 is a critical-severity Classic Buffer Overflow (CWE-120) vulnerability in Espruino Espruino. Its CVSS base score is 9.8 (Critical).

Operationally, ranked in the top 12.9% 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

Buffer overflow vulnerability in function jsvGetStringChars in Espruino before RELEASE_2V09, allows remote attackers to execute arbitrary code.

CWE(s)
CWE-120

Related Threats

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

Affected Assets

espruino
espruino
≤ 2.09

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.

SC-27 Platform-independent Applications
addresses: CWE-120

Platform-independent managed code eliminates the need for unchecked native buffer copies that are the root cause of classic buffer overflows.

References