HOMEVULNERABILITIESCVE-2026-4197
CRITICAL

CVE-2026-4197

CWE-74Published: March 16, 2026· Updated: Mar 19, 2026

9.8
CVSS v3.1
EPSS:0.51%probability of exploitation in 30 daysPercentile:66.0th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-4197 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

dlink40 products
dnr-202l firmwarednr-202ldnr-326 firmwarednr-326dns-1100-4 firmwaredns-1100-4dns-120 firmwaredns-120dns-1200-05 firmwaredns-1200-05dns-1550-04 firmwaredns-1550-04+28 more
Source: NVD CPE · 40 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_102/102.md
ADVISORYhttps://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_103/103.md
ADVISORYhttps://vuldb.com/?id.351109
ADVISORYhttps://vuldb.com/?submit.769864
ADVISORYhttps://vuldb.com/?submit.769865
ADVISORYhttps://vuldb.com/?submit.769866
ADVISORYhttps://vuldb.com/?submit.769867
ADVISORYhttps://vuldb.com/?submit.769868
ADVISORYhttps://vuldb.com/?submit.769869
ADVISORYhttps://vuldb.com/?submit.769870
ADVISORYhttps://vuldb.com/?submit.770363
ADVISORYhttps://vuldb.com/?submit.770364

All References (14)

→
https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_102/102.mdExploit · Third Party Advisory
→
https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_103/103.mdExploit · Third Party Advisory
→
https://vuldb.com/?ctiid.351109Permissions Required · VDB Entry
→
https://vuldb.com/?id.351109Third Party Advisory · VDB Entry
→
https://vuldb.com/?submit.769864Third Party Advisory · VDB Entry
→
https://vuldb.com/?submit.769865Third Party Advisory · VDB Entry
→
https://vuldb.com/?submit.769866Third Party Advisory · VDB Entry
→
https://vuldb.com/?submit.769867Third Party Advisory · VDB Entry
→
https://vuldb.com/?submit.769868Third Party Advisory · VDB Entry
→
https://vuldb.com/?submit.769869Third Party Advisory · VDB Entry
→
https://vuldb.com/?submit.769870Third Party Advisory · VDB Entry
→
https://vuldb.com/?submit.770363Third Party Advisory · VDB Entry
→
https://vuldb.com/?submit.770364Third Party Advisory · VDB Entry
→
https://www.dlink.com/Product

Quick Facts

CVE IDCVE-2026-4197
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-74
CISA KEVNo
EPSS (30d)0.51%
Affected1 vendor
PublishedMar 16, 2026

Related CVEs (CWE-74)

CVE-2026-4195
9.8
CVE-2026-4164
9.8
CVE-2026-4210
9.8
CVE-2026-4196
9.8
CVE-2026-4206
9.8
CVE-2026-4163
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-4197 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
← All Vulnerabilities·Search for CVE-2026-4197·NVD