CVE-2016-6277

Name: CVE-2016-6277
Creator: NVD / NIST
Published: 2016-12-14T16:59:00.35+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10Actively ExploitedEPSS 99.78%

Last modified Jun 17, 2026

CVE-2016-6277 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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/.. CISA has confirmed active exploitation in the wild. EPSS estimates a 99.78% chance of exploitation in the next 30 days.

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/.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

99.78%

100.0th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Sep 7, 2022.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
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

References

http://kb.netgear.com/000036386/CVE-2016-582384Patch, Vendor Advisory
http://packetstormsecurity.com/files/155712/Netgear-R6400-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
http://www.securityfocus.com/bid/94819Broken Link, Third Party Advisory, VDB Entry
http://www.sj-vs.net/a-temporary-fix-for-cert-vu582384-cwe-77-on-netgear-r7000-and-r6400-routers/Broken Link, Mitigation, Third Party Advisory
https://kalypto.org/research/netgear-vulnerability-expanded/Broken Link, Exploit, Third Party Advisory
https://www.exploit-db.com/exploits/40889/Third Party Advisory, VDB Entry
https://www.exploit-db.com/exploits/41598/Exploit, Third Party Advisory, VDB Entry
https://www.kb.cert.org/vuls/id/582384Third Party Advisory, US Government Resource
http://kb.netgear.com/000036386/CVE-2016-582384Patch, Vendor Advisory
http://packetstormsecurity.com/files/155712/Netgear-R6400-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
http://www.securityfocus.com/bid/94819Broken Link, Third Party Advisory, VDB Entry
http://www.sj-vs.net/a-temporary-fix-for-cert-vu582384-cwe-77-on-netgear-r7000-and-r6400-routers/Broken Link, Mitigation, Third Party Advisory
https://kalypto.org/research/netgear-vulnerability-expanded/Broken Link, Exploit, Third Party Advisory
https://www.exploit-db.com/exploits/40889/Third Party Advisory, VDB Entry
https://www.exploit-db.com/exploits/41598/Exploit, Third Party Advisory, VDB Entry
https://www.kb.cert.org/vuls/id/582384Third Party Advisory, US Government Resource
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-6277US Government Resource

Timeline

Published: Dec 14, 2016
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2016-6277?

How severe is CVE-2016-6277?

CVE-2016-6277 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 99.78% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2016-6277?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-6277?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST