CVE-2026-5211 — 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 flaw has been found 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. This vulnerability affects the function UPnP_AV_Server_Path_Del of the file /cgi-bin/app_mgr.cgi. Executing a manipulation of the argument f_dir can lead to stack-based buffer overflow. The attack can be executed remotely. The exploit has been publi…

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

CVEList

D-Link DNS-1550-04 app_mgr.cgi UPnP_AV_Server_Path_Del stack-based overflow↗2026-03-31

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GHSA

GHSA-v5wq-39jv-hmwm: A flaw has been found 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↗2026-03-31

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