# CVE-2026-8273: D-Link DNS-320 OS command injection in multiple CGI components

Source: https://junglewise.ai/threats/cve-2026-8273-d-link-dns-320-os-command-injection-in-multiple-cgi-components  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-11. Updated: 2026-05-11  
License: CC BY 4.0 with a link back

CVE-2026-8273 · Severity: medium · CVSS 4.7 · Published 2026-05-11

A security vulnerability exists in the D-Link DNS-320 ShareCenter, a network-attached storage (NAS) device used for data backup and file sharing. An attacker with administrative access can execute unauthorized system commands on the device. This could lead to a complete compromise of the storage system, allowing the attacker to view, modify, or delete sensitive files and disrupt network operations.

Technologies: [D-Link DNS-320 ShareCenter NAS](https://junglewise.ai/threats/technologies/dns-320-sharecenter-nas), [Dlink Dns-320](https://junglewise.ai/threats/technologies/dns-320), [Dlink Dns-320 Firmware](https://junglewise.ai/threats/technologies/dns-320-firmware). Vendors: [D-Link](https://junglewise.ai/threats/vendors/d-link), [Dlink](https://junglewise.ai/threats/vendors/dlink).

## Quick answers

**Is CVE-2026-8273 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-8273 being exploited in the wild.

**How severe is CVE-2026-8273?** Medium severity, with a CVSS score of 4.7, published 11 May 2026.

**Which products and versions are affected?** D-Link DNS-320 ShareCenter NAS Firmware 2.06B01.

**Is there a fix for CVE-2026-8273?** 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.

**How is CVE-2026-8273 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-8273?** Check whether you run D-Link DNS-320 ShareCenter NAS, Dlink Dns-320 or Dlink Dns-320 Firmware at an affected version. 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.

## Technical details

Multiple OS command injection vulnerabilities exist in the D-Link DNS-320 firmware version 2.06B01. The flaws are located within several CGI binaries, including system_mgr.cgi, account_mgr.cgi, dsk_mgr.cgi, and app_mgr.cgi. Specifically, functions such as cgi_set_host, cgi_set_ntp, and cgi_fan_control fail to properly sanitize user-supplied input before passing it to system shell commands (e.g., via /bin/hostname or sntp). An attacker with network access and administrative (high) privileges can exploit these vulnerabilities by sending crafted POST requests to the affected CGI endpoints. Successful exploitation allows for arbitrary command execution with the privileges of the web server. While the reported CVSS is 4.7 (Medium) due to the requirement for high privileges, some sources suggest a higher impact (8.8) depending on the environment.

## Affected products

- D-Link DNS-320 ShareCenter NAS (Rev.A) Firmware 2.06B01

## Timeline

- 2026-05-11: advisory: CVE-2026-8273 published by NVD/VulDB

## References

- [https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/D-Link%20DNS-320%20%20system_mgraccount_mgrdsk_mgrapp_mgr%20Multiple%20CGI%20OS%20Command%20Injection.md](https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/D-Link%20DNS-320%20%20system_mgraccount_mgrdsk_mgrapp_mgr%20Multiple%20CGI%20OS%20Command%20Injection.md)
- [https://vuldb.com/submit/810082](https://vuldb.com/submit/810082)
- [https://vuldb.com/vuln/362570](https://vuldb.com/vuln/362570)
- [https://vuldb.com/vuln/362570/cti](https://vuldb.com/vuln/362570/cti)
- [https://www.dlink.com/](https://www.dlink.com/)

## Related threats

- [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)
- [A security flaw has been discovered in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L, DNS-320LW, DNS-321…](https://junglewise.ai/threats/cve-2026-5311-a-security-flaw-has-been-discovered-in-d-link-dns-120-dnr-202l-dns)