CVE-2026-74232

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-27. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 0

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

Zbtlink L3_V2_8 firmware 3.0.0.4.528, Zbtlink WE826-T2 firmware 19.1101, Zbtlink ZBT-7628 firmware 1.0.0.2.007, Zbtlink ZBT-ZBT7621 firmware 1.0.0.3.001, MoreQuick MQAC-7620, MQAC-7620A, MQAP-7620, MQAP-7620A, and MQAP-7628 firmware 1.0.0.2.000, AP522 firmware 1.0.0.2.014, AP7628 and HC5661A firmware 3.0.0.4.380, APG721B firmware 19.0809, HK300 firmware 1.0.0.2.032, and MAP-N10 firmware 1.0.0.2.044 ship a backdoor command-and-control implant (yunmgrd) reachable over an unauthenticated cleartext UDP channel to a hardcoded C2 server. A remote unauthenticated attacker on the network path can hijack the channel and execute arbitrary commands as root. The attacker can also modify DNS entries, exfiltrate PPPoE credentials, and open reverse SSH tunnels.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity98% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
40%
KEV
Not listed

Published

August 27, 2026

Last Modified

August 27, 2026

Advisory Details (2)

Auto-updated Sep 17, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic

Zbtlink MQWrt yunmgrd Cloud C2 Implant | Advisories | VulnCheck

https://www.vulncheck.com/advisories/zbtlink-mqwrt-yunmgrd-cloud-c2-implant
generic🔴 Active Exploitation

Chinese Implants in the Supply Chain | Blog | VulnCheck

http://vulncheck.com/blog/zbt-darklantern-speakingstone

Vendor Advisories for CVE-2026-74232(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 52× in last 7d / 171× 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 171 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-74232?
CVE-2026-74232 is a critical vulnerability published on August 27, 2026. Zbtlink L3V28 firmware 3.0.0.4.528, Zbtlink WE826-T2 firmware 19.1101, Zbtlink ZBT-7628 firmware 1.0.0.2.007, Zbtlink ZBT-ZBT7621 firmware 1.0.0.3.001, MoreQuick MQAC-7620, MQAC-7620A, MQAP-7620, MQAP-7620A, and MQAP-7628 firmware 1.0.0.2.000, AP522 firmware 1.0.0.2.014, AP7628 and HC5661A firmware…
When was CVE-2026-74232 disclosed?
CVE-2026-74232 was first published in the National Vulnerability Database on August 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-74232 actively exploited?
CVE-2026-74232 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 59.9% of all scored CVEs.
What is the CVSS score of CVE-2026-74232?
CVE-2026-74232 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-74232?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-74232, 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

Explore the affected products and dependency analysis for CVE-2026-74232

Explore →

Is Your Infrastructure Affected by CVE-2026-74232?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs