CVE-2026-36606

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-06-03. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: None knownExposed: 0

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

Mercusys AC12G (EU) V1 router with firmware AC12G(EU)_V1_200909 encrypts configuration backups with a hardcoded DES key using single DES in ECB mode. An attacker who obtains a backup file can decrypt it to recover all stored credentials including admin password, WiFi PSK, and DDNS credentials.

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: 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
Severity71% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
1%
KEV
Not listed

Published

June 3, 2026

Last Modified

July 22, 2026

Advisory Details (1)

Auto-updated Jun 12, 2026
No patch confirmed yet.
generic

MERCUSYS-AC12G/advisories/CVE-2026-36606.md at master · Tymbark7372/MERCUSYS-AC12G · GitHub

https://github.com/Tymbark7372/MERCUSYS-AC12G/blob/master/advisories/CVE-2026-36606.md

Vendor Advisories for CVE-2026-36606(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 9× 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 215 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-36606?
CVE-2026-36606 is a high vulnerability published on June 3, 2026. Mercusys AC12G (EU) V1 router with firmware AC12G(EU)V1200909 encrypts configuration backups with a hardcoded DES key using single DES in ECB mode. An attacker who obtains a backup file can decrypt it to recover all stored credentials including admin password, WiFi PSK, and DDNS credentials.
When was CVE-2026-36606 disclosed?
CVE-2026-36606 was first published in the National Vulnerability Database on June 3, 2026, with the most recent update on July 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-36606 actively exploited?
CVE-2026-36606 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 98.9% of all scored CVEs.
What is the CVSS score of CVE-2026-36606?
CVE-2026-36606 has a CVSS v3.1 base score of 7.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-36606?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-36606, 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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