CVE-2026-11409

HIGHNVD 7.27.2—
EchelonGraph scoreMEDIUM 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
7.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 3%CVSS: 7.2Exploit: None knownExposed: 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(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: Track

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
Severity72% × 45%
Exploitation3% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
3%
EPSS %ILE
86%
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 8× in last 7d / 41× 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. 2026-09-16 05:14 UTCEPSS rescore
  2. 2026-09-14 03:17 UTCEG score recompute
  3. 2026-09-14 03:17 UTCGHSA enrichment
  4. 2026-09-13 16:46 UTCEPSS rescore
  5. 2026-09-12 15:00 UTCEPSS rescore
  6. 2026-09-11 14:52 UTCEPSS rescore
  7. 2026-09-11 09:36 UTCEPSS rescore
  8. 2026-09-10 09:34 UTCEPSS rescore
  9. 2026-09-08 22:00 UTCEPSS rescore
  10. 2026-09-07 16:01 UTCEPSS rescore
  11. 2026-09-06 13:47 UTCEPSS rescore
  12. 2026-09-04 05:06 UTCEPSS rescore
  13. 2026-09-02 14:11 UTCEPSS rescore
  14. 2026-09-01 13:53 UTCEPSS rescore
  15. 2026-09-01 04:39 UTCEPSS rescore
  16. 2026-08-30 22:31 UTCEG score recompute
  17. 2026-08-30 22:31 UTCGHSA enrichment
  18. 2026-08-30 19:17 UTCEPSS rescore
  19. 2026-08-30 01:21 UTCEPSS rescore
  20. 2026-08-28 21:40 UTCEPSS rescore
  21. 2026-08-27 14:24 UTCEPSS rescore
  22. 2026-08-25 13:48 UTCEPSS rescore
  23. 2026-08-24 22:31 UTCEG score recompute
  24. 2026-08-24 22:31 UTCGHSA enrichment
  25. 2026-08-23 21:57 UTCGHSA enrichment
Show 75 more
  1. 2026-08-23 08:58 UTCEG score recompute
  2. 2026-08-23 08:58 UTCGHSA enrichment
  3. 2026-08-23 00:19 UTCEPSS rescore
  4. 2026-08-21 23:48 UTCEPSS rescore
  5. 2026-08-21 23:31 UTCGHSA enrichment
  6. 2026-08-21 10:27 UTCEG score recompute
  7. 2026-08-21 10:27 UTCGHSA enrichment
  8. 2026-08-20 22:55 UTCEPSS rescore
  9. 2026-08-20 21:23 UTCGHSA enrichment
  10. 2026-08-20 08:24 UTCEG score recompute
  11. 2026-08-20 08:24 UTCGHSA enrichment
  12. 2026-08-19 17:03 UTCEPSS rescore
  13. 2026-08-19 08:18 UTCEG score recompute
  14. 2026-08-19 08:18 UTCGHSA enrichment
  15. 2026-08-18 13:48 UTCEPSS rescore
  16. 2026-08-17 10:16 UTCGHSA enrichment
  17. 2026-08-16 21:18 UTCEG score recompute
  18. 2026-08-16 21:18 UTCGHSA enrichment
  19. 2026-08-16 14:56 UTCEPSS rescore
  20. 2026-08-16 04:56 UTCEG score recompute
  21. 2026-08-16 04:56 UTCGHSA enrichment
  22. 2026-08-16 02:14 UTCEPSS rescore
  23. 2026-08-15 15:58 UTCGHSA enrichment
  24. 2026-08-15 02:59 UTCEG score recompute
  25. 2026-08-15 02:59 UTCGHSA enrichment
  26. 2026-08-15 01:30 UTCEPSS rescore
  27. 2026-08-14 14:00 UTCGHSA enrichment
  28. 2026-08-14 01:01 UTCEG score recompute
  29. 2026-08-14 01:01 UTCGHSA enrichment
  30. 2026-08-13 22:00 UTCEPSS rescore
  31. 2026-08-13 12:02 UTCGHSA enrichment
  32. 2026-08-12 23:02 UTCEG score recompute
  33. 2026-08-12 23:02 UTCGHSA enrichment
  34. 2026-08-12 13:50 UTCEPSS rescore
  35. 2026-08-12 10:04 UTCGHSA enrichment
  36. 2026-08-11 21:03 UTCEG score recompute
  37. 2026-08-11 21:03 UTCGHSA enrichment
  38. 2026-08-11 13:42 UTCEPSS rescore
  39. 2026-08-11 08:04 UTCEG score recompute
  40. 2026-08-11 08:04 UTCGHSA enrichment
  41. 2026-08-10 23:59 UTCEPSS rescore
  42. 2026-08-10 19:05 UTCGHSA enrichment
  43. 2026-08-10 06:06 UTCGHSA enrichment
  44. 2026-08-09 17:05 UTCEG score recompute
  45. 2026-08-09 17:05 UTCGHSA enrichment
  46. 2026-08-09 13:46 UTCEPSS rescore
  47. 2026-08-09 04:07 UTCEG score recompute
  48. 2026-08-09 04:07 UTCGHSA enrichment
  49. 2026-08-08 16:37 UTCEPSS rescore
  50. 2026-08-08 15:09 UTCGHSA enrichment
  51. 2026-08-08 02:09 UTCEG score recompute
  52. 2026-08-08 02:09 UTCGHSA enrichment
  53. 2026-08-07 13:10 UTCGHSA enrichment
  54. 2026-08-07 00:12 UTCEG score recompute
  55. 2026-08-07 00:11 UTCGHSA enrichment
  56. 2026-08-06 13:46 UTCEPSS rescore
  57. 2026-08-06 11:13 UTCGHSA enrichment
  58. 2026-08-05 22:14 UTCEG score recompute
  59. 2026-08-05 22:14 UTCGHSA enrichment
  60. 2026-08-05 19:17 UTCEPSS rescore
  61. 2026-08-05 09:15 UTCGHSA enrichment
  62. 2026-08-04 16:25 UTCEG score recompute
  63. 2026-08-04 16:25 UTCGHSA enrichment
  64. 2026-08-04 15:09 UTCEPSS rescore
  65. 2026-08-04 10:38 UTCEPSS rescore
  66. 2026-08-04 03:26 UTCGHSA enrichment
  67. 2026-08-03 14:28 UTCEG score recompute
  68. 2026-08-03 14:28 UTCGHSA enrichment
  69. 2026-08-03 10:35 UTCEPSS rescore
  70. 2026-08-02 22:59 UTCGHSA enrichment
  71. 2026-08-02 10:01 UTCEG score recompute
  72. 2026-08-02 10:00 UTCGHSA enrichment
  73. 2026-08-02 02:26 UTCEPSS rescore
  74. 2026-08-01 21:01 UTCGHSA enrichment
  75. 2026-08-01 08:02 UTCEG score recompute

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 3% probability of exploitation in the next 30 days, which ranks it in the top 14.4% of all scored CVEs.
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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