# CVE-2026-82690: D-Link DNS-327L and DNS-340L OS command injection in ve_mgr.cgi

Source: https://junglewise.ai/threats/cve-2026-82690-d-link-dns-327l-and-dns-340l-os-command-injection-in-ve-mgr-cgi  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-31. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-82690 · Severity: critical · CVSS 9.1 · Published 2026-08-31

D-Link DNS-327L and DNS-340L are network storage devices used in small offices and homes. A remote attacker can inject arbitrary operating system commands through a vulnerable web interface, allowing complete takeover of the device without authentication. This could compromise stored data, disrupt network operations, or serve as a foothold for further attacks.

Technologies: [D-Link DNS-327L](https://junglewise.ai/threats/technologies/dns-327l), [D-Link DNS-340L](https://junglewise.ai/threats/technologies/dns-340l). Vendors: [D-Link](https://junglewise.ai/threats/vendors/d-link).

## Quick answers

**Is CVE-2026-82690 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-82690 being exploited in the wild.

**How severe is CVE-2026-82690?** Critical severity, with a CVSS score of 9.1, published 31 August 2026.

**Which products and versions are affected?** D-Link DNS-327L up to 20260717; D-Link DNS-340L up to 20260717.

**Is there a fix for CVE-2026-82690?** 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-2026-82690 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-82690?** Check whether you run D-Link DNS-327L or D-Link DNS-340L 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

This is an OS command injection vulnerability in the /cgi-bin/ve_mgr.cgi web interface. The vulnerability exists in the handling of the "f_dev" parameter, which fails to properly sanitize user input before passing it to system commands. An attacker can exploit this flaw remotely without authentication by crafting a malicious request containing shell metacharacters in the f_dev argument. Successful exploitation allows arbitrary command execution with device privileges. Affected versions extend to at least 20260717; patch availability status is unclear.

## Affected products

- D-Link DNS-327L up to 20260717
- D-Link DNS-340L up to 20260717

## Timeline

- 2026-08-31: disclosed

## References

- [https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/DLINK-CMD-004-vulndb.md](https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/DLINK-CMD-004-vulndb.md)
- [https://vuldb.com/cve/CVE-2026-82690](https://vuldb.com/cve/CVE-2026-82690)

## Related threats

- [D-Link DNS-340L OS command injection in dropbox.cgi](https://junglewise.ai/threats/cve-2026-85223-d-link-dns-340l-os-command-injection-in-dropbox-cgi)
- [D-Link DNS-340L OS command injection in addon_center.cgi](https://junglewise.ai/threats/cve-2026-85222-d-link-dns-340l-os-command-injection-in-addon-center-cgi)
- [D-Link DNS-340L and DNS-345 OS command injection in iscsi_mgr.cgi](https://junglewise.ai/threats/cve-2026-82692-d-link-dns-340l-and-dns-345-os-command-injection-in-iscsi-mgr-cgi)
- [D-Link DNS-320L DNS-327L DNS-340L DNS-345 OS command injection in CGI handler](https://junglewise.ai/threats/cve-2026-82691-d-link-dns-320l-dns-327l-dns-340l-dns-345-os-command-injection-in)
- [D-Link DNS ShareCenter OS command injection in isomount_mgr.cgi](https://junglewise.ai/threats/cve-2026-82689-d-link-dns-sharecenter-os-command-injection-in-isomount-mgr-cgi)