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CVE-2016-6277

NETGEAR Multiple Routers Remote Code Execution

8.8 HIGHActively exploited (CISA KEV)Public exploitEPSS 99.8%
  1. Published14 Dec 2016
  2. Added to CISA KEV7 Mar 2022
  3. Remediation due7 Sept 2022
Actively exploited (CISA KEV)

NETGEAR confirmed multiple routers allow unauthenticated web pages to pass form input directly to the command-line interface, permitting remote code execution.

Added to KEV: 7 Mar 2022Federal remediation due: 7 Sept 2022

Description

NETGEAR R6250 before 1.0.4.6.Beta, R6400 before 1.0.1.18.Beta, R6700 before 1.0.1.14.Beta, R6900, R7000 before 1.0.7.6.Beta, R7100LG before 1.0.0.28.Beta, R7300DST before 1.0.0.46.Beta, R7900 before 1.0.1.8.Beta, R8000 before 1.0.3.26.Beta, D6220, D6400, D7000, and possibly other routers allow remote attackers to execute arbitrary commands via shell metacharacters in the path info to cgi-bin/.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

NETGEAR D6220 Firmware≤ 1.0.0.22
NETGEAR D6400 Firmware≤ 1.0.0.56
NETGEAR R6250 Firmware≤ 1.0.4.6_10.1.12
NETGEAR R6400 Firmware≤ 1.0.1.18
NETGEAR R6700 Firmware≤ 1.0.1.14
NETGEAR R6900 Firmware≤ 1.0.1.14
NETGEAR R7000 Firmware≤ 1.0.7.2_1.1.93
NETGEAR R7100lg Firmware≤ 1.0.0.28
NETGEAR R7300dst Firmware≤ 1.0.0.46
NETGEAR R7900 Firmware≤ 1.0.1.8
NETGEAR R8000 Firmware≤ 1.0.3.26

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2016-6277 being actively exploited?

Yes. CVE-2016-6277 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 7 Mar 2022.

How severe is CVE-2016-6277?

CVE-2016-6277 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 99.8% probability of exploitation.

Which products are affected by CVE-2016-6277?

Affected products include NETGEAR D6220 Firmware, NETGEAR D6400 Firmware, NETGEAR R6250 Firmware, NETGEAR R6400 Firmware, NETGEAR R6700 Firmware, and 6 more.

How do I fix CVE-2016-6277?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2016-6277 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.