CVE-2026-77946

CRITICALPre-NVD 10.010.0—
EchelonGraph scoreHIGH confidence

Score 10.0 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-22. a secondary CVSS source baseline 10.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 10.0Exploit: Elevated riskExposed: 0

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

A vulnerability was determined in TRENDnet TEW-821DAP 2.2.01b05. Affected by this vulnerability is the function uci_safe_get of the file /cgi-bin/apply_time.cgi of the component NTP Timezone Configuration Handler. Executing a manipulation of the argument system.ntp.server/system.ntp.enable_server/cameo.time.time_zone/cameo.cameo.syslog_server can lead to stack-based buffer overflow. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized.

CVSS v3
10.0
EG Score
10.0(high)
EG Risk
76(Attend)
EG Risk 76/100SSVC: Attend

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
Severity100% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
48%
KEV
Not listed

Published

August 22, 2026

Last Modified

August 26, 2026

Advisory Details (1)

Auto-updated Sep 16, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

WAVLINK-WN530H4-Command-Injection-in-set_add_routing/TEW-821DAP_ssi_NTP_Timezone_Config_Stack_Overflow.md at main · dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing · GitHub

https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/TEW-821DAP_ssi_NTP_Timezone_Config_Stack_Overflow.md

Vendor Advisories for CVE-2026-77946(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 50× in last 7d / 216× 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 216 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-77946?
CVE-2026-77946 is a critical vulnerability published on August 22, 2026. A vulnerability was determined in TRENDnet TEW-821DAP 2.2.01b05. Affected by this vulnerability is the function ucisafeget of the file /cgi-bin/applytime.cgi of the component NTP Timezone Configuration Handler. Executing a manipulation of the argument…
When was CVE-2026-77946 disclosed?
CVE-2026-77946 was first published in the National Vulnerability Database on August 22, 2026, with the most recent update on August 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-77946 actively exploited?
CVE-2026-77946 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 51.7% of all scored CVEs.
What is the CVSS score of CVE-2026-77946?
CVE-2026-77946 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2026-77946?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-77946, 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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