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  4. CVE 2026 76590 trendnet tew 755ap ssi wancgi stack based overflow
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Back to active CVEs
Critical · CVSS 9.9CVE-2026-76590

TRENDnet TEW-755AP ssi wan.cgi stack-based overflow

Answer in brief

CVE-2026-76590 records a Critical severity (CVSS 9.9) vulnerability in TRENDnet TEW-755AP ssi wan.cgi stack-based overflow. The current sources do not mark it as known exploited. The current feed maps TRENDnet/TEW-755AP (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 19, 2026Updated Aug 21, 2026Source checked Oct 4, 2026First seen by HOL Aug 19, 2026Material review Aug 21, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 9.9
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 9.9. 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-755AP (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
TRENDnet/TEW-755APgeneric20260702Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for TRENDnet/TEW-755AP.
  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 19, 2026

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

  2. Source modified

    Aug 21, 2026

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

  3. First seen by HOL

    Aug 19, 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 identified in TRENDnet TEW-755AP up to 20260702. Affected by this issue is some unknown functionality of the file /cgi-bin/wan.cgi of the component ssi. Such manipulation of the argument cameo.wan.wan_pppoe_password_00 leads to stack-based buffer overflow. The attack can be executed remotely. The exploit is publicly available and might be used.

Quoted source text, attributed separately from HOL analysis.

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  • WordPress Unlimited Elements For Elementor (Free Widgets, Addons, Templates) plugin <= 2.0.20 - Cross Site Scripting (XSS) vulnerabilitySame generic ecosystem
  • WP Ultimate Review <= 2.4.3 - Authenticated (Subscriber+) Arbitrary Shortcode Execution via 'xs_reviw_summery' ParameterSame generic ecosystem
  • WPC Estimated Delivery Date for WooCommerce <= 4.0.1 - Reflected Cross-Site Scripting via 'rule_data' ParameterSame generic ecosystem
  • Linux Mint Xreader EPUB File epub-document.c g_strdup_printf path traversalSame generic ecosystem

Record context

Vulnerability class
Buffer Overflow
EPSS
Not reported
CWE IDs
CWE-121, CWE-119
Source
CVE List V5
Source checked
Oct 4, 2026
References
6 linked sources
Open source record