Cyber Resilience

CVE-2020-27861

High

Published: 12 February 2021

Published
12 February 2021
Modified
21 November 2024
KEV Added
Patch
CVSS Score v3.1 8.8 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0102 77.7th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2020-27861 is a high-severity OS Command Injection (CWE-78) vulnerability in Netgear Cbk40 Firmware. Its CVSS base score is 8.8 (High).

Operationally, ranked in the top 22.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR Orbi 2.5.1.16 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the UA_Parser utility. A crafted Host Name option in a…

more

DHCP request can trigger execution of a system call composed from a user-supplied string. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-11076.

CWE(s)

Related Threats

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

Affected Assets

netgear
cbk40 firmware
≤ 2.6.1.38
netgear
cbk43 firmware
≤ 2.6.1.38
netgear
cbr40 firmware
≤ 2.6.1.38
netgear
ex6200 firmware
≤ 1.0.1.82
netgear
ex7700 firmware
≤ 1.0.0.210
netgear
ex8000 firmware
≤ 1.0.1.224
netgear
rbk12 firmware
≤ 2.6.1.44
netgear
rbk13 firmware
≤ 2.6.1.44
netgear
rbk14 firmware
≤ 2.6.1.44
netgear
rbk15 firmware
≤ 2.6.1.44
+29 more product configuration(s) — see NVD for full list

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