CVE-2026-90693

CRITICAL 9.9

D-Link DIR-878 WAN Settings SetWan3Settings stack-based overflow

CVSS Score

9.9

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-121 CWE-119
Vendor	d-link
Product	dir-878
Published	Sep 14, 2026
Last Updated	Sep 15, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:X/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

D-Link / DIR-878

120B05

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/403226 vuldb.com: https://vuldb.com/vuln/403226/cti vuldb.com: https://vuldb.com/cve/CVE-2026-90693 vuldb.com: https://vuldb.com/submit/915573 github.com: https://github.com/Amalll-Sec/router-vulnerability-research/blob/main/advisories/d-link/dir-878/SetWan3Settings/README.md dlink.com: https://www.dlink.com/

Credits

🔍 AmaIIl (VulDB User)