Trending
CVE-2026-4203

CVE detail

CVE-2026-4203

A vulnerability was detected 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. Impacted is the function cgi_portforwarding_add/cgi_portforwarding_del/cgi_portforwarding_modify/cgi_portforwarding_add_scan/cgi_dhcpd_lease/cgi_ddns/cgi_ip/cgi_dhcpd of the file /cgi-bin/network_mgr.cgi. The manipulation results in command injection. The attack may be launched remotely. The exploit is now public and may be used.

CVSS 2.1 · LowBuzz score 42.41 public exploit repository references

Buzz score

Why this CVE is surfacing

Buzz score total 42.4

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 26.4 · diversity 11.5 · KEV 0.0 · OTX 0.0 · PoC 4.5

Mention score

26.4

13 evidence mentions in the snapshot

Diversity score

11.5

3 sources across 2 categories

KEV score

0.0

No KEV entry observed

OTX score

0.0

0 OTX pulses

PoC score

4.5

1 repos · best confidence 0.90

Best PoC traction

Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions: 0; within the 30d window
Peak daily: 0; highest bucket

Evidence

Source links by recency

Newest mentions first

13 source links · newest first

https://www.dlink.com/www.dlink.com
No excerpt available.
Vendor Advisorywww.dlink.comMar 16, 2026, 2:20 PM
https://vuldb.com/?submit.770408vuldb.com
No excerpt available.
Exploitvuldb.comMar 16, 2026, 2:20 PM
https://vuldb.com/?submit.770407vuldb.com
No excerpt available.
Exploitvuldb.comMar 16, 2026, 2:20 PM
https://vuldb.com/?submit.770406vuldb.com
No excerpt available.
Exploitvuldb.comMar 16, 2026, 2:20 PM
https://vuldb.com/?submit.770405vuldb.com
No excerpt available.
Exploitvuldb.comMar 16, 2026, 2:20 PM
https://vuldb.com/?submit.770404vuldb.com
No excerpt available.
Exploitvuldb.comMar 16, 2026, 2:20 PM
https://vuldb.com/?submit.770403vuldb.com
No excerpt available.
Exploitvuldb.comMar 16, 2026, 2:20 PM
https://vuldb.com/?submit.770402vuldb.com
No excerpt available.
Exploitvuldb.comMar 16, 2026, 2:20 PM
https://vuldb.com/?submit.770401vuldb.com
No excerpt available.
Exploitvuldb.comMar 16, 2026, 2:20 PM
https://vuldb.com/?id.351115vuldb.com
No excerpt available.
Exploitvuldb.comMar 16, 2026, 2:20 PM
https://vuldb.com/?ctiid.351115vuldb.com
No excerpt available.
Exploitvuldb.comMar 16, 2026, 2:20 PM
https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_123/123.mdgithub.com
No excerpt available.
Exploitgithub.comMar 16, 2026, 2:20 PM
https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_122/122.mdgithub.com
No excerpt available.
Exploitgithub.comMar 16, 2026, 2:20 PM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

1 repository references · best confidence 0.90 · max 0 stars

wudipjq/my_vulnHigh confidence
githubNVD Exploit reference0 starsDiscovered Jul 14, 2026, 12:20 AM
NVD labels the source link as Exploit; this is not independent verification of the repository's code.

Related records

Similar CVEs

6 related CVEs with shared weakness or product evidence

CVE-2026-4210
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,…
CVSS 2.1 · Low
Public PoC observed5 mentions
CVE-2026-4209
A vulnerability was identified 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-…
CVSS 2.1 · Low
Public PoC observed15 mentions
CVE-2026-4207
A vulnerability was determined 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-…
CVSS 2.1 · Low
Public PoC observed9 mentions
CVE-2026-4206
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,…
CVSS 2.1 · Low
Public PoC observed8 mentions
CVE-2026-4205
A vulnerability has been 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-…
CVSS 2.1 · Low
Public PoC observed8 mentions
CVE-2026-4204
A flaw has been 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-…
CVSS 2.1 · Low
Public PoC observed5 mentions

External lookup

Potential internet exposure

Potential exposure only — not proof of vulnerability.Shodan results indicate potentially internet-exposed products, not confirmed vulnerable systems. They do not confirm that any returned system is vulnerable to CVE-2026-4203.

Product-level CPE searches intentionally omit version fields and NVD version-range or configuration certainty. Verify the exact product version and configuration independently.

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Product CPE queries

Derived from this CVE's existing NVD CPE 2.3 records; the application, operating-system, or hardware part is retained.

cpe:2.3:h:dlink:dnr-202lSearch this product on Shodan
cpe:2.3:o:dlink:dnr-202l_firmwareSearch this product on Shodan
cpe:2.3:h:dlink:dnr-326Search this product on Shodan
cpe:2.3:o:dlink:dnr-326_firmwareSearch this product on Shodan
cpe:2.3:h:dlink:dns-1100-4Search this product on Shodan
cpe:2.3:o:dlink:dns-1100-4_firmwareSearch this product on Shodan
cpe:2.3:h:dlink:dns-120Search this product on Shodan
cpe:2.3:h:dlink:dns-1200-05Search this product on Shodan
cpe:2.3:o:dlink:dns-1200-05_firmwareSearch this product on Shodan
cpe:2.3:o:dlink:dns-120_firmwareSearch this product on Shodan
cpe:2.3:h:dlink:dns-1550-04Search this product on Shodan
cpe:2.3:o:dlink:dns-1550-04_firmwareSearch this product on Shodan
cpe:2.3:h:dlink:dns-315lSearch this product on Shodan
cpe:2.3:o:dlink:dns-315l_firmwareSearch this product on Shodan
cpe:2.3:h:dlink:dns-320Search this product on Shodan
cpe:2.3:o:dlink:dns-320_firmwareSearch this product on Shodan
cpe:2.3:h:dlink:dns-320lSearch this product on Shodan
cpe:2.3:o:dlink:dns-320l_firmwareSearch this product on Shodan
cpe:2.3:h:dlink:dns-320lwSearch this product on Shodan
cpe:2.3:o:dlink:dns-320lw_firmwareSearch this product on Shodan
cpe:2.3:h:dlink:dns-321Search this product on Shodan
cpe:2.3:o:dlink:dns-321_firmwareSearch this product on Shodan
cpe:2.3:h:dlink:dns-322lSearch this product on Shodan
cpe:2.3:o:dlink:dns-322l_firmwareSearch this product on Shodan
cpe:2.3:o:dlink:dns-323_firmwareSearch this product on Shodan

Exact CVE query

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vuln:CVE-2026-4203Search this CVE on Shodan

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Metadata

Canonical fields

NVD status

Analyzed

Published

Mar 16, 2026

Modified

Jun 17, 2026

Official record

Authoritative NVD record

CVSS 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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CWE IDs

Vendor classifications

How this vector reads

CVSS 4.0 base metrics decoded below. This explanation does not recalculate or change the NVD score.

Attack Vector (AV): Network. The vulnerable system can be reached across network boundaries.
Attack Complexity (AC): Low. No special conditions beyond the attacker-controlled steps are required.
Attack Requirements (AT): None. No prerequisite deployment or execution condition is required.
Privileges Required (PR): Low. The attacker needs basic user-level privileges.
User Interaction (UI): None. Exploitation does not require a targeted user to act.
Vulnerable System Confidentiality (VC): Low. There is a limited impact to this security property.
Vulnerable System Integrity (VI): Low. There is a limited impact to this security property.
Vulnerable System Availability (VA): Low. There is a limited impact to this security property.
Subsequent System Confidentiality (SC): None. There is no direct impact to this security property.
Subsequent System Integrity (SI): None. There is no direct impact to this security property.
Subsequent System Availability (SA): None. There is no direct impact to this security property.

Optional CVSS v4 metrics remain in the raw vector; only base metrics are expanded here.

Signals

Exploitation indicators

0 stored signals · no KEV · 0 OTX pulses