PT-2026-25587 · D Link · Dns-340L+18

Bond_Yes · CVE-2026-4206 · Published 2026-03-03 · Updated 2026-03-16

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions D-Link DNS-120 D-Link DNR-202L D-Link DNS-315L D-Link DNS-320 D-Link DNS-320L D-Link DNS-320LW D-Link DNS-321 D-Link DNR-322L D-Link DNS-323 D-Link DNS-325 D-Link DNS-326 D-Link DNS-327L D-Link DNR-326 D-Link DNS-340L D-Link DNS-343 D-Link DNS-345 D-Link DNS-726-4 D-Link DNS-1100-4 D-Link DNS-1200-05 D-Link DNS-1550-04 versions prior to 20260205

Description A flaw exists that allows for command injection. This occurs through manipulation of the /cgi-bin/dsk mgr.cgi file, specifically within the FMT rebuild diskmgr, FMT create diskmgr, and ScanDisk run e2fsck functions. The attack can be carried out remotely. The exploit for this issue has been publicly released.

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

Exploit

Fix

Command Injection

Special Elements Injection

Weakness Enumeration

CWE-77

CWE-74

Related Identifiers

BDU:2026-09493

CVE-2026-4206

Affected Products

Dnr-202L

Dnr-322L

Dnr-326

Dns-1100-4

Dns-120

Dns-1200-05

Dns-1550-04

Dns-315L

Dns-320

Dns-320L

Dns-321

Dns-323

Dns-325

Dns-326

Dns-327L

Dns-340L

Dns-343

Dns-345

Dns-726-4

References · 10

• 🔥❌ https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_138/138.md · Exploit, Deleted
• 🔥❌ https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_139/139.md · Exploit, Deleted
• https://nvd.nist.gov/vuln/detail/CVE-2026-4206 · Security Note
• https://bdu.fstec.ru/vul/2026-09493 · Security Note
• https://vuldb.com/?ctiid.351118 · Note
• https://vuldb.com/?submit.770419 · Note
• https://vuldb.com/?submit.770418 · Note
• https://vuldb.com/?submit.770417 · Note
• https://dlink.com · Note
• https://vuldb.com/?id.351118 · Note