CVE-2026-41923

CRITICALNVD 9.39.3—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.3 under NVD CVSS v3. EPSS exploit probability: 0.7%, top 28% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
9.3
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 3%CVSS: 9.3Exploit: NoneExposed: 0

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

WDR201A WiFi Extender (HW V2.1, FW LFMZX28040922V1.02) contains an OS command injection vulnerability in the internet.cgi binary that allows unauthenticated remote attackers to execute arbitrary shell commands by injecting malicious input into the gateway POST parameter. Attackers can exploit unsanitized parameter concatenation in the set_add_routing function to inject shell commands that are executed via popen() with partial output reflected in the HTTP response.

CVSS v3
9.3
EG Score
9.3(medium)
EPSS
83.7%
KEV
Not listed

Published

May 4, 2026

Last Modified

May 5, 2026

Advisory Details (3)

Auto-updated May 4, 2026
No patch confirmed yet.
generic

WDR201A WiFi Extender OS Command Injection via internet.cgi | Advisories | VulnCheck

https://www.vulncheck.com/advisories/wdr201a-wifi-extender-os-command-injection-via-internet-cgi
generic

Oscilloscope Manufacturer, Measurement & Analysis Instruments, Mini Oscilloscope Supplier - Shenzhen Yipu Commercial and Trading Co., Ltd

https://www.made-in-china.com/showroom/yeapook/#:~:text=Established%20in%202015.%2CDistrict%2C%20Shenzhen%2C%20Guangdong%2C%20China
generic

Teaching the Machine Where to Look: Scaling Embedded Vulnerability Research with AI | Street #CySec - Tales of a cybersecurity journey

https://mstreet97.github.io/security-research/iot/vulnerability-disclosure/ai-assisted-research/cybersecurity/cve/2026/05/04/Teaching_the_Machine_Where_to_Look.html

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 34× 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 223 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-41923?
CVE-2026-41923 is a critical vulnerability published on May 4, 2026. WDR201A WiFi Extender (HW V2.1, FW LFMZX28040922V1.02) contains an OS command injection vulnerability in the internet.cgi binary that allows unauthenticated remote attackers to execute arbitrary shell commands by injecting malicious input into the gateway POST parameter. Attackers can exploit…
When was CVE-2026-41923 disclosed?
CVE-2026-41923 was first published in the National Vulnerability Database on May 4, 2026, with the most recent update on May 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-41923 actively exploited?
CVE-2026-41923 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 83.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-41923?
CVE-2026-41923 has a CVSS v3 base score of 9.3 (NVD).
How do I remediate CVE-2026-41923?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-41923, 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

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