CVE-2026-11409

HIGHNVD 7.27.2—
EchelonGraph scoreHIGH confidence

Score 7.2 from GitHub Security Advisory (severity: HIGH) published 2026-06-17. NVD baseline CVSS 7.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
7.2
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 3%CVSS: 7.2Exploit: NoneExposed: 0

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

An authenticated OS command injection vulnerability exists in the IPv6 PPPoE configuration handler in TL-WR940N v6 due to improper sanitization of user input. An attacker with administrative access may exploit this issue to execute arbitrary system commands with elevated privileges.

CVSS v3
7.2
EG Score
7.2(high)
EPSS
84.7%
KEV
Not listed

Published

June 17, 2026

Last Modified

June 18, 2026

Advisory Details (3)

Auto-updated Jun 18, 2026
No patch confirmed yet.
generic

Security Advisory: Multiple OS Command Injection Vulnerabilities in TP-Link TL-WR940N (CVE-2026-11409 to CVE-2026-11410)

https://www.tp-link.com/us/support/faq/5131/
generic

Download for TL-WR940N | TP-Link

https://www.tp-link.com/us/support/download/tl-wr940n/v6/#Firmware
generic

Download for TL-WR940N | TP-Link

https://www.tp-link.com/en/support/download/tl-wr940n/v6/#Firmware

Vendor Advisories for CVE-2026-11409(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 32× in last 7d / 98× 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.

  1. 2026-07-07 01:57 UTCEG score recompute
  2. 2026-07-07 01:57 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 12:49 UTCEG score recompute
  5. 2026-07-06 12:49 UTCGHSA enrichment
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-05 21:11 UTCEG score recompute
  8. 2026-07-05 21:11 UTCGHSA enrichment
  9. 2026-07-05 08:08 UTCEG score recompute
  10. 2026-07-05 08:08 UTCGHSA enrichment
  11. 2026-07-05 02:30 UTCEPSS rescore
  12. 2026-07-05 02:30 UTCEPSS rescore
  13. 2026-07-04 18:38 UTCEG score recompute
  14. 2026-07-04 18:38 UTCGHSA enrichment
  15. 2026-07-04 06:31 UTCEPSS rescore
  16. 2026-07-04 05:38 UTCEG score recompute
  17. 2026-07-04 05:37 UTCGHSA enrichment
  18. 2026-07-03 13:21 UTCEG score recompute
  19. 2026-07-03 13:20 UTCGHSA enrichment
  20. 2026-07-03 00:11 UTCEG score recompute
  21. 2026-07-03 00:10 UTCGHSA enrichment
  22. 2026-07-02 11:11 UTCEG score recompute
  23. 2026-07-02 11:11 UTCGHSA enrichment
  24. 2026-07-01 21:35 UTCEG score recompute
  25. 2026-07-01 21:35 UTCGHSA enrichment
Show 73 more
  1. 2026-07-01 15:06 UTCEPSS rescore
  2. 2026-07-01 15:06 UTCEPSS rescore
  3. 2026-07-01 08:37 UTCEG score recompute
  4. 2026-07-01 08:37 UTCGHSA enrichment
  5. 2026-06-30 23:22 UTCEPSS rescore
  6. 2026-06-30 19:38 UTCEG score recompute
  7. 2026-06-30 19:38 UTCGHSA enrichment
  8. 2026-06-30 06:39 UTCEG score recompute
  9. 2026-06-30 06:39 UTCGHSA enrichment
  10. 2026-06-29 17:37 UTCEG score recompute
  11. 2026-06-29 17:37 UTCGHSA enrichment
  12. 2026-06-29 14:06 UTCEPSS rescore
  13. 2026-06-29 04:36 UTCEG score recompute
  14. 2026-06-29 04:36 UTCGHSA enrichment
  15. 2026-06-28 15:35 UTCEG score recompute
  16. 2026-06-28 15:35 UTCGHSA enrichment
  17. 2026-06-28 14:07 UTCEPSS rescore
  18. 2026-06-28 04:56 UTCEPSS rescore
  19. 2026-06-28 04:56 UTCEPSS rescore
  20. 2026-06-28 02:36 UTCEG score recompute
  21. 2026-06-28 02:36 UTCGHSA enrichment
  22. 2026-06-27 13:37 UTCEG score recompute
  23. 2026-06-27 13:37 UTCGHSA enrichment
  24. 2026-06-27 03:08 UTCEPSS rescore
  25. 2026-06-27 00:38 UTCEG score recompute
  26. 2026-06-27 00:37 UTCGHSA enrichment
  27. 2026-06-26 11:39 UTCEG score recompute
  28. 2026-06-26 11:39 UTCGHSA enrichment
  29. 2026-06-25 21:35 UTCEG score recompute
  30. 2026-06-25 21:35 UTCGHSA enrichment
  31. 2026-06-25 13:49 UTCEPSS rescore
  32. 2026-06-25 08:37 UTCEG score recompute
  33. 2026-06-25 08:36 UTCGHSA enrichment
  34. 2026-06-24 19:37 UTCEG score recompute
  35. 2026-06-24 19:37 UTCGHSA enrichment
  36. 2026-06-24 14:05 UTCEPSS rescore
  37. 2026-06-24 04:21 UTCEG score recompute
  38. 2026-06-24 04:21 UTCGHSA enrichment
  39. 2026-06-23 21:32 UTCEPSS rescore
  40. 2026-06-23 15:22 UTCEG score recompute
  41. 2026-06-23 15:22 UTCGHSA enrichment
  42. 2026-06-23 02:23 UTCEG score recompute
  43. 2026-06-23 02:23 UTCGHSA enrichment
  44. 2026-06-22 14:25 UTCEPSS rescore
  45. 2026-06-22 14:25 UTCEPSS rescore
  46. 2026-06-22 13:21 UTCEG score recompute
  47. 2026-06-22 13:21 UTCGHSA enrichment
  48. 2026-06-22 00:23 UTCEG score recompute
  49. 2026-06-22 00:23 UTCGHSA enrichment
  50. 2026-06-21 14:56 UTCEPSS rescore
  51. 2026-06-21 14:56 UTCEPSS rescore
  52. 2026-06-21 11:24 UTCEG score recompute
  53. 2026-06-21 11:23 UTCGHSA enrichment
  54. 2026-06-21 01:59 UTCEPSS rescore
  55. 2026-06-21 01:59 UTCEPSS rescore
  56. 2026-06-20 22:23 UTCEG score recompute
  57. 2026-06-20 22:23 UTCGHSA enrichment
  58. 2026-06-20 09:20 UTCEG score recompute
  59. 2026-06-20 09:19 UTCGHSA enrichment
  60. 2026-06-19 20:05 UTCEG score recompute
  61. 2026-06-19 20:05 UTCGHSA enrichment
  62. 2026-06-19 19:25 UTCEPSS rescore
  63. 2026-06-19 07:06 UTCEG score recompute▼ 1.30
  64. 2026-06-19 07:05 UTCGHSA enrichment
  65. 2026-06-18 19:21 UTCNVD updateCVSS v3 → 7.2
  66. 2026-06-18 18:03 UTCEG score recompute
  67. 2026-06-18 18:03 UTCGHSA enrichment
  68. 2026-06-18 17:52 UTCEPSS rescore
  69. 2026-06-18 04:58 UTCEG score recompute
  70. 2026-06-18 04:58 UTCGHSA enrichment
  71. 2026-06-17 17:53 UTCEPSS rescore
  72. 2026-06-17 15:53 UTCEG score recompute
  73. 2026-06-17 15:50 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-11409?
CVE-2026-11409 is a high vulnerability published on June 17, 2026. An authenticated OS command injection vulnerability exists in the IPv6 PPPoE configuration handler in TL-WR940N v6 due to improper sanitization of user input. An attacker with administrative access may exploit this issue to execute arbitrary system commands with elevated privileges.
When was CVE-2026-11409 disclosed?
CVE-2026-11409 was first published in the National Vulnerability Database on June 17, 2026, with the most recent update on June 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-11409 actively exploited?
CVE-2026-11409 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 84.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-11409?
CVE-2026-11409 has a CVSS v3 base score of 7.2 (NVD).
How do I remediate CVE-2026-11409?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-11409, 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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