CVE-2026-90693

9.4 criticalEPSS 0.9%

Critical (9.4). EPSS 0.9% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

9.4 critical

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

CVSS 3.1

9.9 critical

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS: 0.9% chance of exploitation in the next 30 days; higher than 59% of CVEs (scores of 2026-10-31)
CWEs: CWE-119, CWE-121
Published: 2026-09-14
Modified: 2026-09-15
Record from: the NVD, synced 2026-10-19

References

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

Check your stack JSON