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  4. CVE 2026 75784 trendnet tew wlc100 http header nginx fun0040da4c
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Back to active CVEs
Critical · CVSS 10.0CVE-2026-75784

TRENDnet TEW-WLC100 HTTP Header nginx FUN_0040da4c stack-based overflow

Answer in brief

CVE-2026-75784 records a Critical severity (CVSS 10.0) vulnerability in TRENDnet TEW-WLC100 HTTP Header nginx FUN_0040da4c stack-based overflow. The current sources do not mark it as known exploited. The current feed maps TRENDnet/TEW-WLC100 (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 18, 2026Updated Aug 20, 2026Source checked Oct 2, 2026First seen by HOL Aug 18, 2026Material review Aug 20, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 10.0
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 10.0. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps TRENDnet/TEW-WLC100 (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
TRENDnet/TEW-WLC100generic1v2.07b01Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for TRENDnet/TEW-WLC100.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Aug 18, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 20, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 18, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencevuldb.com
  • Source referencevuldb.com
  • Source referencevuldb.com
  • Source referencevuldb.com
Upstream source description

A vulnerability was detected in TRENDnet TEW-WLC100 1v2.07b01. Affected by this issue is the function FUN_0040da4c of the file /usr/nginx/sbin/nginx of the component HTTP Header Handler. The manipulation of the argument Server results in stack-based buffer overflow. The attack may be launched remotely. The exploit is now public and may be used.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

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  • Weaver e-Bridge Unauthenticated Arbitrary File Read via saveYZJFileSame generic ecosystem
  • H3C CVM Unauthenticated File Upload via fileUpload/upload TokenSame generic ecosystem
  • Missing Authorization in Meari IoT Cloud Platform OpenAPI ServiceSame generic ecosystem
  • LimeSurvey Community Edition 7.4.0 - Stored XSS through the Date/Time date_min question attributeSame generic ecosystem
  • Apache Traffic Server: SNI to Host header matching policy is not properly enforcedSame generic ecosystem

Record context

Vulnerability class
Buffer Overflow
EPSS
Not reported
CWE IDs
CWE-121, CWE-119
Source
CVE List V5
Source checked
Oct 2, 2026
References
6 linked sources
Open source record