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Vulnerability record · CVE-2026-90693 · published 14 September 2026

CVE-2026-90693: Memory buffer overflow vulnerability

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.

9.4 CVSS 4.0 Critical EPSS 0.91% · top 41.6% CWE-119 · Memory buffer overflowCWE-121 · Stack-based buffer overflow Deferred
9.4CVSS 4.0 base score, v2 9.0
0.91%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
7References
15 Sep 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

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

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Source: NIST National Vulnerability Database (record CVE-2026-90693), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.