Cyber Resilience

CVE-2021-20745

High

Published: 28 June 2021

Published
28 June 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.0025 48.2th percentile
Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-20745 is a high-severity OS Command Injection (CWE-78) vulnerability in Inkdrop Inkdrop. Its CVSS base score is 7.8 (High).

Operationally, ranked at the 48.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Inkdrop versions prior to v5.3.1 allows an attacker to execute arbitrary OS commands on the system where it runs by loading a file or code snippet containing an invalid iframe into Inkdrop.

CWE(s)
CWE-78

Related Threats

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

Affected Assets

inkdrop
inkdrop
≤ 5.3.1

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-78

Platform-independent apps typically execute inside a managed runtime or sandbox that restricts direct OS command execution, reducing the ability to exploit OS command injection.

SI-10 Information Input Validation
addresses: CWE-78

Validates inputs to block special elements that would alter OS command execution.

References