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  4. CVE 2026 90693 d link dir 878 wan settings setwan3settings stack
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Back to active CVEs
Critical · CVSS 9.4CVE-2026-90693

D-Link DIR-878 WAN Settings SetWan3Settings stack-based overflowCVE-2026-90693

Answer in brief

CVE-2026-90693 records a Critical severity (CVSS 9.4) vulnerability in D-Link DIR-878 WAN Settings SetWan3Settings stack-based overflow. The current sources do not mark it as known exploited. The current feed maps D-Link/DIR-878 (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 Sep 14, 2026Updated Sep 15, 2026Source checked Oct 30, 2026First seen by HOL Sep 14, 2026Material review Sep 15, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 9.4
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 9.4. 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 D-Link/DIR-878 (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
D-Link/DIR-878generic120B05Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for D-Link/DIR-878.
  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

    Sep 14, 2026

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

  2. Source modified

    Sep 15, 2026

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

  3. First seen by HOL

    Sep 14, 2026

Sources and claim methodology

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

A flaw has been found in D-Link DIR-878 120B05. This impacts the function SetWan3Settings of the component WAN Settings. This manipulation of the argument Primary/Secondary causes stack-based buffer overflow. Remote exploitation of the attack is possible.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Buffer Overflow
EPSS
Not reported
CWE IDs
CWE-121, CWE-119
Source
CVE List V5
Source checked
Oct 30, 2026
References
6 linked sources
Open source record