CVE-2016-6277

HIGHNVD 8.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-03-07), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 3 sources updated this weekExploited in the wild
8.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 100%CVSS: 8.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
8.8
EG Score
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS
100.0%
KEV
⚠ Exploited

Published

December 14, 2016

Last Modified

April 21, 2026

Advisory Details (6)

Auto-updated May 2, 2026
🔬 Proof of concept available. No patch confirmed yet. Sources: cert.
generic

Packet Storm

http://packetstormsecurity.com/files/155712/Netgear-R6400-Remote-Code-Execution.html
generic

Security Advisory for CVE-2016-6277, PSV-2016-0245 - NETGEAR Support

http://kb.netgear.com/000036386/CVE-2016-582384
cert

VU#582384 - Multiple Netgear routers are vulnerable to arbitrary command injection

https://www.kb.cert.org/vuls/id/582384
generic🟡 PoC Available

Netgear R7000 / R6400 - 'cgi-bin' Command Injection (Metasploit) - CGI remote Exploit

https://www.exploit-db.com/exploits/41598/
generic🟡 PoC Available

Netgear R7000 - Command Injection - CGI webapps Exploit

https://www.exploit-db.com/exploits/40889/
generic
http://www.securityfocus.com/bid/94819

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 31× in last 7d / 183× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 374 total refreshes for this CVE.

  1. 2026-07-23 01:23 UTCEG score recompute
  2. 2026-07-22 22:03 UTCEG score recompute
  3. 2026-07-22 21:14 UTCGHSA enrichment
  4. 2026-07-22 19:40 UTCCISA KEV update
  5. 2026-07-22 17:13 UTCGHSA enrichment
  6. 2026-07-22 13:14 UTCGHSA enrichment
  7. 2026-07-22 09:15 UTCGHSA enrichment
  8. 2026-07-22 05:16 UTCGHSA enrichment
  9. 2026-07-22 01:02 UTCGHSA enrichment
  10. 2026-07-21 20:22 UTCGHSA enrichment
  11. 2026-07-21 16:23 UTCGHSA enrichment
  12. 2026-07-21 14:37 UTCCISA KEV update
  13. 2026-07-21 12:22 UTCGHSA enrichment
  14. 2026-07-21 08:24 UTCGHSA enrichment
  15. 2026-07-21 04:25 UTCGHSA enrichment
  16. 2026-07-21 00:25 UTCGHSA enrichment
  17. 2026-07-20 20:26 UTCGHSA enrichment
  18. 2026-07-20 16:27 UTCGHSA enrichment
  19. 2026-07-20 12:28 UTCGHSA enrichment
  20. 2026-07-20 08:29 UTCGHSA enrichment
  21. 2026-07-20 04:30 UTCGHSA enrichment
  22. 2026-07-19 20:32 UTCGHSA enrichment
  23. 2026-07-19 16:33 UTCGHSA enrichment
  24. 2026-07-19 12:33 UTCGHSA enrichment
  25. 2026-07-19 08:35 UTCGHSA enrichment
Show 75 more
  1. 2026-07-19 04:36 UTCGHSA enrichment
  2. 2026-07-19 00:38 UTCGHSA enrichment
  3. 2026-07-18 20:38 UTCGHSA enrichment
  4. 2026-07-18 16:39 UTCGHSA enrichment
  5. 2026-07-18 12:40 UTCGHSA enrichment
  6. 2026-07-18 08:41 UTCGHSA enrichment
  7. 2026-07-18 04:42 UTCGHSA enrichment
  8. 2026-07-18 00:43 UTCGHSA enrichment
  9. 2026-07-17 20:45 UTCGHSA enrichment
  10. 2026-07-17 16:47 UTCGHSA enrichment
  11. 2026-07-17 12:45 UTCGHSA enrichment
  12. 2026-07-17 08:46 UTCEG score recompute
  13. 2026-07-17 08:46 UTCGHSA enrichment
  14. 2026-07-17 04:47 UTCGHSA enrichment
  15. 2026-07-17 00:49 UTCGHSA enrichment
  16. 2026-07-16 20:50 UTCGHSA enrichment
  17. 2026-07-16 17:04 UTCCISA KEV update
  18. 2026-07-16 16:51 UTCGHSA enrichment
  19. 2026-07-16 12:47 UTCGHSA enrichment
  20. 2026-07-16 08:49 UTCGHSA enrichment
  21. 2026-07-16 04:51 UTCGHSA enrichment
  22. 2026-07-16 00:52 UTCGHSA enrichment
  23. 2026-07-15 20:54 UTCGHSA enrichment
  24. 2026-07-15 16:55 UTCGHSA enrichment
  25. 2026-07-15 16:49 UTCCISA KEV update
  26. 2026-07-15 15:04 UTCCISA KEV update
  27. 2026-07-15 12:56 UTCGHSA enrichment
  28. 2026-07-15 08:55 UTCGHSA enrichment
  29. 2026-07-15 04:55 UTCGHSA enrichment
  30. 2026-07-15 00:56 UTCGHSA enrichment
  31. 2026-07-14 20:58 UTCGHSA enrichment
  32. 2026-07-14 18:05 UTCCISA KEV update
  33. 2026-07-14 17:00 UTCGHSA enrichment
  34. 2026-07-14 13:01 UTCGHSA enrichment
  35. 2026-07-14 09:03 UTCGHSA enrichment
  36. 2026-07-14 05:03 UTCGHSA enrichment
  37. 2026-07-14 01:04 UTCGHSA enrichment
  38. 2026-07-13 21:05 UTCGHSA enrichment
  39. 2026-07-13 17:07 UTCCISA KEV update
  40. 2026-07-13 17:06 UTCGHSA enrichment
  41. 2026-07-13 13:07 UTCGHSA enrichment
  42. 2026-07-13 09:09 UTCGHSA enrichment
  43. 2026-07-13 05:09 UTCGHSA enrichment
  44. 2026-07-13 01:09 UTCGHSA enrichment
  45. 2026-07-12 21:10 UTCGHSA enrichment
  46. 2026-07-12 17:10 UTCGHSA enrichment
  47. 2026-07-12 13:11 UTCGHSA enrichment
  48. 2026-07-12 09:12 UTCGHSA enrichment
  49. 2026-07-12 05:13 UTCGHSA enrichment
  50. 2026-07-12 01:14 UTCGHSA enrichment
  51. 2026-07-11 21:16 UTCGHSA enrichment
  52. 2026-07-11 17:18 UTCGHSA enrichment
  53. 2026-07-11 13:19 UTCGHSA enrichment
  54. 2026-07-11 09:21 UTCGHSA enrichment
  55. 2026-07-11 08:24 UTCEPSS rescore
  56. 2026-07-11 05:22 UTCGHSA enrichment
  57. 2026-07-11 01:23 UTCGHSA enrichment
  58. 2026-07-10 21:25 UTCGHSA enrichment
  59. 2026-07-10 17:52 UTCCISA KEV update
  60. 2026-07-10 17:26 UTCGHSA enrichment
  61. 2026-07-10 13:27 UTCGHSA enrichment
  62. 2026-07-10 09:28 UTCGHSA enrichment
  63. 2026-07-10 05:28 UTCGHSA enrichment
  64. 2026-07-10 01:29 UTCGHSA enrichment
  65. 2026-07-09 21:28 UTCGHSA enrichment
  66. 2026-07-09 17:30 UTCGHSA enrichment
  67. 2026-07-09 13:29 UTCGHSA enrichment
  68. 2026-07-09 09:30 UTCGHSA enrichment
  69. 2026-07-09 05:31 UTCGHSA enrichment
  70. 2026-07-09 01:31 UTCGHSA enrichment
  71. 2026-07-08 21:31 UTCGHSA enrichment
  72. 2026-07-08 17:32 UTCGHSA enrichment
  73. 2026-07-08 13:34 UTCGHSA enrichment
  74. 2026-07-08 09:35 UTCGHSA enrichment
  75. 2026-07-08 05:37 UTCGHSA enrichment

Publicly available exploits

(4 references)

Working exploit code is in the public domain (1 Metasploit module) (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-41598✓ verified
    First seen Mar 13, 2017

    Netgear R7000 / R6400 - 'cgi-bin' Command Injection (Metasploit)

    Open source ↗
  • Exploit-DBEDB-40889✓ verified
    First seen Dec 7, 2016

    Netgear R7000 - Command Injection

    Open source ↗
  • Metasploitexploit/linux/http/netgear_r7000_cgibin_exec✓ verified
    First seen Dec 6, 2016

    Netgear R7000 and R6400 cgi-bin Command Injection

    Open source ↗
  • Nucleihttp/cves/2016/CVE-2016-6277.yaml
    First seen Jan 1, 2016

    NETGEAR Routers - Remote Code Execution

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2016-6277?
CVE-2016-6277 is a high vulnerability published on December 14, 2016. 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…
When was CVE-2016-6277 disclosed?
CVE-2016-6277 was first published in the National Vulnerability Database on December 14, 2016, with the most recent update on April 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-6277 actively exploited?
Yes. CISA added CVE-2016-6277 to the Known Exploited Vulnerabilities catalog on March 7, 2022, affecting NETGEAR Multiple Routers. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2016-6277?
CVE-2016-6277 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2016-6277?
CVE-2016-6277 affects NETGEAR Multiple Routers. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2016-6277?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-6277, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2016-6277

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