Cyber Resilience

CVE-2021-28961

HighRCE

Published: 21 March 2021

Published
21 March 2021
Modified
21 November 2024
KEV Added
Patch
01 August 2021
CVSS Score v3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0079 74.3th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-28961 is a high-severity OS Command Injection (CWE-78) vulnerability in Openwrt Openwrt. Its CVSS base score is 8.8 (High).

Operationally, ranked in the top 25.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

applications/luci-app-ddns/luasrc/model/cbi/ddns/detail.lua in the DDNS package for OpenWrt 19.07 allows remote authenticated users to inject arbitrary commands via POST requests.

CWE(s)

Related Threats

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

Affected Assets

openwrt
openwrt
19.07.0

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.

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.

addresses: CWE-78

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

References