CVE-2026-5213 — Improper Restriction of Operations within the Bounds of a Memory Buffer in Dlink Dnr-202l Firmware

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-121 — Stack-based Buffer Overflow CWE-787 — Out-of-bounds Write3 documents3 sources

Severity

7.4HIGHNVD

EPSS

0.0%

top 90.54%

CISA KEV

Not in KEV

Exploit

No known exploits

Affected products

Dlink Dnr-202l Firmware Dlink Dnr-326 Firmware Dlink Dns-1100-4 Firmware +37 more

Timeline

PublishedMar 31

Description

A vulnerability was determined in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L, DNS-320LW, DNS-321, DNR-322L, DNS-323, DNS-325, DNS-326, DNS-327L, DNR-326, DNS-340L, DNS-343, DNS-345, DNS-726-4, DNS-1100-4, DNS-1200-05 and DNS-1550-04 up to 20260205. The affected element is the function cgi_adduser_to_session of the file /cgi-bin/account_mgr.cgi. This manipulation of the argument read_list causes stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit ha…

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 Packages40 packages

▶NVDdlink/dns-320lw_firmware2026-02-05

▶CVEListV5d-link/dns-320lw20260205

▶NVDdlink/dnr-202l_firmware2026-02-05

▶NVDdlink/dns-315l_firmware2026-02-05

▶NVDdlink/dns-320l_firmware2026-02-05

🔴Vulnerability Details

GHSA

GHSA-rgch-x4h6-m876: A vulnerability was determined in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L, DNS-320LW, DNS-321, DNR-322L, DNS-323, DNS-325, DNS-326, DNS-↗2026-03-31

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CVEList

D-Link DNS-1550-04 account_mgr.cgi cgi_adduser_to_session stack-based overflow↗2026-03-31

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