CVE-2017-5521

HIGHNVD 8.19.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-09-08), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 8.1 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
8.1
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 89%CVSS: 8.1Exploit: NoneExposed: 0

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

An issue was discovered on NETGEAR R8500, R8300, R7000, R6400, R7300, R7100LG, R6300v2, WNDR3400v3, WNR3500Lv2, R6250, R6700, R6900, and R8000 devices. They are prone to password disclosure via simple crafted requests to the web management server. The bug is exploitable remotely if the remote management option is set, and can also be exploited given access to the router over LAN or WLAN. When trying to access the web panel, a user is asked to authenticate; if the authentication is canceled and password recovery is not enabled, the user is redirected to a page that exposes a password recovery token. If a user supplies the correct token to the page /passwordrecovered.cgi?id=TOKEN (and password recovery is not enabled), they will receive the admin password for the router. If password recovery is set the exploit will fail, as it will ask the user for the recovery questions that were previously set when enabling that feature. This is persistent (even after disabling the recovery option, the exploit will fail) because the router will ask for the security questions.

CVSS v3
8.1
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
99.8%
KEV
⚠ Exploited

Published

January 17, 2017

Last Modified

April 21, 2026

Advisory Details (4)

Auto-updated May 19, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-5521
generic🟡 PoC Available

Netgear Routers - Password Disclosure - Hardware webapps Exploit

https://www.exploit-db.com/exploits/41205/
generic
http://www.securityfocus.com/bid/95457
generic

Web GUI Password Recovery and Exposure Security Vulnerability - NETGEAR Support

http://kb.netgear.com/30632/Web-GUI-Password-Recovery-and-Exposure-Security-Vulnerability

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 38× in last 7d / 184× 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 368 total refreshes for this CVE.

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

Publicly available exploits

(3 references)

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

  • Exploit-DBEDB-41205✓ verified
    First seen Jan 30, 2017

    Netgear Routers - Password Disclosure

    Open source ↗
  • Metasploitauxiliary/gather/netgear_password_disclosure✓ verified
    First seen Jan 1, 2017

    NETGEAR Administrator Password Disclosure

    Open source ↗
  • Nucleihttp/cves/2017/CVE-2017-5521.yaml
    First seen Jan 1, 2017

    NETGEAR Routers - Authentication Bypass

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2017-5521?
CVE-2017-5521 is a high vulnerability published on January 17, 2017. An issue was discovered on NETGEAR R8500, R8300, R7000, R6400, R7300, R7100LG, R6300v2, WNDR3400v3, WNR3500Lv2, R6250, R6700, R6900, and R8000 devices. They are prone to password disclosure via simple crafted requests to the web management server. The bug is exploitable remotely if the remote…
When was CVE-2017-5521 disclosed?
CVE-2017-5521 was first published in the National Vulnerability Database on January 17, 2017, 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-2017-5521 actively exploited?
Yes. CISA added CVE-2017-5521 to the Known Exploited Vulnerabilities catalog on September 8, 2022, affecting NETGEAR Multiple Devices. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2017-5521?
CVE-2017-5521 has a CVSS v3 base score of 8.1 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2017-5521?
CVE-2017-5521 affects NETGEAR Multiple Devices. 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-2017-5521?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-5521, 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.

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