Cyber Resilience

CVE-2020-26800

MediumPublic PoC

Published: 11 January 2021

Published
11 January 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS Score 0.0026 49.2th percentile
Risk Priority 11 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2020-26800 is a medium-severity Out-of-bounds Write (CWE-787) vulnerability in Ethereum Aleth. Its CVSS base score is 5.5 (Medium).

Operationally, ranked at the 49.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

A stack overflow vulnerability in Aleth Ethereum C++ client version <= 1.8.0 using a specially crafted a config.json file may result in a denial of service.

CWE(s)
CWE-787

Related Threats

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

Affected Assets

ethereum
aleth
≤ 1.8.0

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-787

Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.

References