# CVE-2026-5311: A security flaw has been discovered in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L, DNS-320LW, DNS-321…

Source: https://junglewise.ai/threats/cve-2026-5311-a-security-flaw-has-been-discovered-in-d-link-dns-120-dnr-202l-dns  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-01  
License: CC BY 4.0 with a link back

CVE-2026-5311 · Severity: medium · CVSS 5.3 · Published 2026-04-01

A security flaw has been discovered 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. Affected is the function Webdav_Access_List of the file /cgi-bin/file_center.cgi. Performing a manipulation of the argument cmd results in improper access controls. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks.

Technologies: [Dlink Dns-320](https://junglewise.ai/threats/technologies/dns-320), [Dlink Dns-320 Firmware](https://junglewise.ai/threats/technologies/dns-320-firmware). Vendors: [Dlink](https://junglewise.ai/threats/vendors/dlink).

## Quick answers

**Is CVE-2026-5311 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-5311 being exploited in the wild.

**How severe is CVE-2026-5311?** Medium severity, with a CVSS score of 5.3, published 1 April 2026.

**Which products and versions are affected?** Dlink Dnr-202l, Dlink Dnr-202l Firmware, Dlink Dnr-326, Dlink Dnr-326 Firmware and 36 more. The advisory does not name versions.

**Is there a fix for CVE-2026-5311?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2026-5311?** Check whether you run Dlink Dnr-202l, Dlink Dnr-202l Firmware, Dlink Dnr-326 or one of the others listed. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Dlink Dnr-202l
- Dlink Dnr-202l Firmware
- Dlink Dnr-326
- Dlink Dnr-326 Firmware
- Dlink Dns-1100-4
- Dlink Dns-1100-4 Firmware
- Dlink Dns-120
- Dlink Dns-120 Firmware
- Dlink Dns-1200-05
- Dlink Dns-1200-05 Firmware
- Dlink Dns-1550-04
- Dlink Dns-1550-04 Firmware
- Dlink Dns-315l
- Dlink Dns-315l Firmware
- Dlink Dns-320
- Dlink Dns-320 Firmware
- Dlink Dns-320l
- Dlink Dns-320l Firmware
- Dlink Dns-320lw
- Dlink Dns-320lw Firmware
- Dlink Dns-321
- Dlink Dns-321 Firmware
- Dlink Dns-322l
- Dlink Dns-322l Firmware
- Dlink Dns-323
- Dlink Dns-323 Firmware
- Dlink Dns-325
- Dlink Dns-325 Firmware
- Dlink Dns-326
- Dlink Dns-326 Firmware
- Dlink Dns-327l
- Dlink Dns-327l Firmware
- Dlink Dns-340l
- Dlink Dns-340l Firmware
- Dlink Dns-343
- Dlink Dns-343 Firmware
- Dlink Dns-345
- Dlink Dns-345 Firmware
- Dlink Dns-726-4
- Dlink Dns-726-4 Firmware

## Related threats

- [D-Link DNS-320 OS command injection in multiple CGI components](https://junglewise.ai/threats/cve-2026-8273-d-link-dns-320-os-command-injection-in-multiple-cgi-components)
- [D-Link DNS-320 OS command injection in webfile_mgr.cgi](https://junglewise.ai/threats/cve-2026-8272-d-link-dns-320-os-command-injection-in-webfile-mgr-cgi)
- [D-Link DNS-320 OS command injection in network_mgr.cgi](https://junglewise.ai/threats/cve-2026-8271-d-link-dns-320-os-command-injection-in-network-mgr-cgi)
- [A weakness has been identified in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L, DNS-320LW, DNS-321, DNR-322L…](https://junglewise.ai/threats/cve-2026-5312-a-weakness-has-been-identified-in-d-link-dns-120-dnr-202l-dns-315l)