Buffer overflow in D-link Dnr-202l
CVE-2026-4214
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 t…
Vulnerability class: Buffer Overflow
EPSS: 0.001 (21.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R.
Affected products
- D-link Dnr-202l — versions 20260205
- D-link Dnr-322l — versions 20260205
- D-link Dnr-326 — versions 20260205
- D-link Dns-1100-4 — versions 20260205
- D-link Dns-120 — versions 20260205
- D-link Dns-1200-05 — versions 20260205
- D-link Dns-1550-04 — versions 20260205
- D-link Dns-315l — versions 20260205
- D-link Dns-320 — versions 20260205
- D-link Dns-320l — versions 20260205
Weakness classification (CWE)
References
- VDB-351125 | D-Link DNS-1550-04 app_mgr.cgi UPnP_AV_Server_Path_Setting stack-based overflow (vdb-entry, technical-description)
- VDB-351125 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
- Submit #770445 | D-Link DNS-120/202L/315L/320/320L/320LW/321/322L/323/325/326/327L/326/340L/343/345/726-4/1100-4/1200-05/1550-04 up to 20260205 Stack-based Buffer Overflow (third-party-advisory)
- github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_164/164.md (exploit)
- www.dlink.com/ (product)
Frequently asked questions
- What is CVE-2026-4214?
- CVE-2026-4214 is a high-severity vulnerability in D-link Dnr-202l, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-03-16.
- How severe is CVE-2026-4214?
- High severity. CVSS v3 base score is 8.8 out of 10.