THREATPORT/VULNERABILITY/CVE-2026-4197
MEDIUM SEVERITY

CVE-2026-4197

Dnr 202l Firmware vulnerability

CVSS
6.3
EPSS
16.8%
EPSS pct
97th
Exploited
No known
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. Affected is the function RSS_Get_Update_Status/RSS_Update/RSS_Channel_AutoDownlaod/RSS_Add/RSS_Channel_Item_Downlaod/RSS_History_Item_List/RSS_Item_List of the file /cgi-bin/download_mgr.cgi. The manipulation results in command injection. The attack may be performed from remote. The exploit has been made public and could be used.
Affected vendor
Dlink
Affected product
Dnr 202l Firmware
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Weakness type (CWE)
Published
2026-03-16

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring low privileges, no user interaction. Successful exploitation leads to low impact to confidentiality, low impact to integrity, low impact to availability.

Its EPSS score of 16.8% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 97% of all scored CVEs.

Check your external exposure to CVE-2026-4197

  • Confirm whether Dlink Dnr 202l Firmware is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2026-4197.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2026-4197

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2026-4197 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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