A vulnerability was found 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. This affects the function FMT_rebuild_diskmgr/FMT_create_diskmgr/ScanDisk_run_e2fsck of the file /cgi-bin/dsk_mgr.cgi. Performing a manipulation results in command injection. The attack is possible to be carried out remotely. The exploit has been made public and could be used.
CVE-2026-4206
CRITICALNVD 9.89.8—Elevated
EchelonGraph scoreMEDIUM confidence
This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 3.6%, top 12% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.
Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 4%CVSS: 9.8Exploit: Elevated riskExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.8
- EG Score
- 9.8(medium)
- EG Risk
- 60(Track*)EG Risk 60/100SSVC: Track*
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity98% × 45%Exploitation40% × 40%Automatability0% × 15%Action: Watch closely — could escalate to Attend. - EPSS PROB
- 4%
- EPSS %ILE
- 89%
- KEV
- Not listed
Published
March 16, 2026
Last Modified
June 17, 2026
References (8)
- cna@vuldbhttps://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_138/138.md
- cna@vuldbhttps://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_139/139.md
- cna@vuldbhttps://vuldb.com/?ctiid.351118
- cna@vuldbhttps://vuldb.com/?id.351118
- cna@vuldbhttps://vuldb.com/?submit.770417
- cna@vuldbhttps://vuldb.com/?submit.770418
- cna@vuldbhttps://vuldb.com/?submit.770419
- cna@vuldbhttps://www.dlink.com/
Related CVEs
Related CVEs are temporarily unavailable — the same-product, same-vendor and same-CWE lists could not be loaded just now. That is not a sign that none exist; please retry shortly.
Frequently asked(5)
What is CVE-2026-4206?
CVE-2026-4206 is a critical vulnerability published on March 16, 2026. A vulnerability was found 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. This affects the function…
When was CVE-2026-4206 disclosed?
CVE-2026-4206 was first published in the National Vulnerability Database on March 16, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-4206 actively exploited?
CVE-2026-4206 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4% probability of exploitation in the next 30 days, which ranks it in the top 11.2% of all scored CVEs.
What is the CVSS score of CVE-2026-4206?
CVE-2026-4206 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-4206?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-4206, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-4206
Is Your Infrastructure Affected by CVE-2026-4206?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.