CVE-2026-3978 — Improper Restriction of Operations within the Bounds of a Memory Buffer in D-link Dir-513

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory BufferCWE-121 — Stack-based Buffer Overflow3 documents3 sources
Severity
7.4HIGHNVD
EPSS
0.1%
top 83.50%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
D-link Dir-513Dlink Dir-513 Firmware
Timeline
PublishedMar 12

Description

A vulnerability was detected in D-Link DIR-513 1.10. The impacted element is an unknown function of the file /goform/formEasySetupWizard3. The manipulation of the argument wan_connected results in stack-based buffer overflow. The attack can be launched remotely. The exploit is now public and may be used.

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Affected Packages2 packages

▶CVEListV5d-link/dir-5131.10

🔴Vulnerability Details

2
GHSA
GHSA-ccfc-w7hx-qcqw: A vulnerability was detected in D-Link DIR-513 1↗2026-03-12
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CVEList
D-Link DIR-513 formEasySetupWizard3 stack-based overflow↗2026-03-12
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CVE-2026-3978 — D-link Dir-513 vulnerability | cvebase