CVE & CISA-KEV Catalog

CVE-2020-27861

HIGHEPSS 79th pctl
8.8
CVSS v3
NVD

Description

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 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-78OS Command Injection

How to fix

Remediation Available
cbk40 firmwareNVD
Affected:< 2.6.1.38Fixed in:2.6.1.38CVE-2020-27861derived from NVD
cbk43 firmwareNVD
Affected:< 2.6.1.38Fixed in:2.6.1.38CVE-2020-27861derived from NVD
cbr40 firmwareNVD
Affected:< 2.6.1.38Fixed in:2.6.1.38CVE-2020-27861derived from NVD
ex6200 firmwareNVD
Affected:< 1.0.1.82Fixed in:1.0.1.82CVE-2020-27861derived from NVD
ex7700 firmwareNVD
Affected:< 1.0.0.210Fixed in:1.0.0.210CVE-2020-27861derived from NVD
ex8000 firmwareNVD
Affected:< 1.0.1.224Fixed in:1.0.1.224CVE-2020-27861derived from NVD
rbk12 firmwareNVD
Affected:< 2.6.1.44Fixed in:2.6.1.44CVE-2020-27861derived from NVD
rbk13 firmwareNVD
Affected:< 2.6.1.44Fixed in:2.6.1.44CVE-2020-27861derived from NVD
rbk14 firmwareNVD
Affected:< 2.6.1.44Fixed in:2.6.1.44CVE-2020-27861derived from NVD
rbk15 firmwareNVD
Affected:< 2.6.1.44Fixed in:2.6.1.44CVE-2020-27861derived from NVD
rbk20 router firmwareNVD
Affected:< 2.6.1.36Fixed in:2.6.1.36CVE-2020-27861derived from NVD
rbk20 satellite firmwareNVD
Affected:< 2.6.1.38Fixed in:2.6.1.38CVE-2020-27861derived from NVD
rbk20w firmwareNVD
Affected:< 2.6.1.36Fixed in:2.6.1.36CVE-2020-27861derived from NVD
rbk22 router firmwareNVD
Affected:< 2.6.1.36Fixed in:2.6.1.36CVE-2020-27861derived from NVD
rbk22 satellite firmwareNVD
Affected:< 2.6.1.38Fixed in:2.6.1.38CVE-2020-27861derived from NVD
rbk23 router firmwareNVD
Affected:< 2.6.1.36Fixed in:2.6.1.36CVE-2020-27861derived from NVD
rbk23 satellite firmwareNVD
Affected:< 2.6.1.38Fixed in:2.6.1.38CVE-2020-27861derived from NVD
rbk23w firmwareNVD
Affected:< 2.6.1.36Fixed in:2.6.1.36CVE-2020-27861derived from NVD
rbk30 firmwareNVD
Affected:< 2.6.1.36Fixed in:2.6.1.36CVE-2020-27861derived from NVD
rbk33 firmwareNVD
Affected:< 2.6.1.36Fixed in:2.6.1.36CVE-2020-27861derived from NVD
rbk40 router firmwareNVD
Affected:< 2.6.1.36Fixed in:2.6.1.36CVE-2020-27861derived from NVD
rbk40 satellite firmwareNVD
Affected:< 2.6.1.38Fixed in:2.6.1.38CVE-2020-27861derived from NVD
rbk43 router firmwareNVD
Affected:< 2.6.1.36Fixed in:2.6.1.36CVE-2020-27861derived from NVD
rbk43 satellite firmwareNVD
Affected:< 2.6.1.38Fixed in:2.6.1.38CVE-2020-27861derived from NVD
rbk43s router firmwareNVD
Affected:< 2.6.1.36Fixed in:2.6.1.36CVE-2020-27861derived from NVD
rbk43s satellite firmwareNVD
Affected:< 2.6.1.38Fixed in:2.6.1.38CVE-2020-27861derived from NVD
rbk44 router firmwareNVD
Affected:< 2.6.1.36Fixed in:2.6.1.36CVE-2020-27861derived from NVD
rbk44 satellite firmwareNVD
Affected:< 2.6.1.38Fixed in:2.6.1.38CVE-2020-27861derived from NVD
rbk50 firmwareNVD
Affected:< 2.6.1.40Fixed in:2.6.1.40CVE-2020-27861derived from NVD
rbk50v firmwareNVD
Affected:< 2.6.1.40Fixed in:2.6.1.40CVE-2020-27861derived from NVD
rbk52w firmwareNVD
Affected:< 2.6.1.40Fixed in:2.6.1.40CVE-2020-27861derived from NVD
rbr10 firmwareNVD
Affected:< 2.6.1.44Fixed in:2.6.1.44CVE-2020-27861derived from NVD
rbr20 firmwareNVD
Affected:< 2.6.1.36Fixed in:2.6.1.36CVE-2020-27861derived from NVD
rbr40 firmwareNVD
Affected:< 2.6.1.36Fixed in:2.6.1.36CVE-2020-27861derived from NVD
rbr50 firmwareNVD
Affected:< 2.6.1.40Fixed in:2.6.1.40CVE-2020-27861derived from NVD
rbs10 firmwareNVD
Affected:< 2.6.1.44Fixed in:2.6.1.44CVE-2020-27861derived from NVD
rbs20 firmwareNVD
Affected:< 2.6.1.38Fixed in:2.6.1.38CVE-2020-27861derived from NVD
rbs40 firmwareNVD
Affected:< 2.6.1.38Fixed in:2.6.1.38CVE-2020-27861derived from NVD
rbs50 firmwareNVD
Affected:< 2.6.1.40Fixed in:2.6.1.40CVE-2020-27861derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorAdjacent
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

2.03%probability of exploitation in 30 days
79thpercentile

Elevated risk: more likely to be exploited than 79% of all known CVEs.

References

Vendor Advisory1
Third-Party Advisory1

Related Vulnerabilities

Other CWE-78 (OS Command Injection) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2021-1498Critical9.8100%KEVFix
CVE-2014-6271Critical9.8100%KEVFix
CVE-2019-16920Critical9.8100%KEV-
CVE-2022-44877Critical9.8100%KEVFix
CVE-2020-8515Critical9.8100%KEV-
CVE-2020-9054Critical9.8100%KEVFix
Embed a live status badge for CVE-2020-27861
CVE-2020-27861 severity badge

Markdown

[![CVE-2020-27861](https://tridentstack.com/cve/badge/CVE-2020-27861.svg)](https://tridentstack.com/cve/CVE-2020-27861)

HTML

<a href="https://tridentstack.com/cve/CVE-2020-27861"><img src="https://tridentstack.com/cve/badge/CVE-2020-27861.svg" alt="CVE-2020-27861"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.