CVE-2016-6277
HIGHCISA KEVEPSS 100th pctlDescription
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/.
How to fix
Actively exploited, no published fix found yet
CISA required action: Apply updates per vendor instructions.
Federal remediation due: 2022-09-07
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploit Intelligence
Very high risk: more likely to be exploited than 100% of all known CVEs.
NETGEAR Multiple Routers Remote Code Execution Vulnerability
NETGEAR confirmed multiple routers allow unauthenticated web pages to pass form input directly to the command-line interface, permitting remote code execution.
Apply updates per vendor instructions.
Remediation due: 2022-09-07
References
Related Vulnerabilities
Other CWE-352 (Cross-Site Request Forgery) vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2014-0054 | Medium | 6.8 | 91% | - | Fix |
| CVE-2013-6429 | Medium | 6.8 | 90% | - | Fix |
| CVE-2022-41622 | High | 8.8 | 88% | - | - |
| CVE-2018-7700 | High | 8.8 | 75% | - | - |
| CVE-2015-2295 | Medium | 6.8 | 66% | - | - |
| CVE-2015-6973 | Medium | 6.8 | 65% | - | - |
Common questions
How do I fix CVE-2016-6277?
No published fix for CVE-2016-6277 has been found yet. It is on the CISA Known Exploited Vulnerabilities list; federal agencies must remediate by 2022-09-07. Apply the vendor's mitigations per CISA's guidance.
Is CVE-2016-6277 being actively exploited?
Yes. CVE-2016-6277 is listed in the CISA Known Exploited Vulnerabilities catalog, which means exploitation has been observed in the wild. US federal agencies were required to remediate it by 2022-09-07. Treat it as a priority whatever its CVSS score says.
How severe is CVE-2016-6277?
CVE-2016-6277 has a CVSS v3 base score of 8.8, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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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 2026-04-21.