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: ghsa, secondary
Trending — 4 sources updated this week
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 10.0Exploit: None knownExposed: 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
50(Track)
EG Risk 50/100SSVC: 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
Severity100% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
—
EPSS %ILE
—
KEV
Not listed

Published

August 22, 2026

Last Modified

August 22, 2026

Advisory Details (1)

Auto-updated Aug 22, 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 9× in last 7d / 9× 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. 2026-08-23 03:58 UTCGHSA enrichment
  2. 2026-08-22 23:49 UTCGHSA enrichment
  3. 2026-08-22 19:39 UTCGHSA enrichment
  4. 2026-08-22 15:29 UTCEG score recompute
  5. 2026-08-22 15:29 UTCGHSA enrichment
  6. 2026-08-22 11:19 UTCEG score recompute
  7. 2026-08-22 11:18 UTCNVD updateCVSS v4 → 9.3
  8. 2026-08-22 11:06 UTCEG score recompute
  9. 2026-08-22 11:05 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(4)

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. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
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.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-77946

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