🛡️ CVE-2026-4203
🟡 CVSS 6.3 — Medium ⚠️ Exploit Public CWE-74 NVD
6.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity MEDIUM
CVSS Score 6.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CWE CWE-74
Public Exploit ⚠️ Yes
Source NVD
Published 2026-03-16
Updated 2026-06-02
Modified 2026-04-29
Fix URL N/A

Affected Packages

Software From version Fixed in
dnr-202l-firmware 2026-02-05
dnr-326-firmware 2026-02-05
dns-1100-4-firmware 2026-02-05
dns-120-firmware 2026-02-05
dns-1200-05-firmware 2026-02-05
dns-1550-04-firmware 2026-02-05
dns-315l-firmware 2026-02-05
dns-320-firmware 2026-02-05
dns-320l-firmware 2026-02-05
dns-320lw-firmware 2026-02-05
dns-321-firmware 2026-02-05
dns-322l-firmware 2026-02-05
dns-323-firmware 2026-02-05
dns-325-firmware 2026-02-05
dns-326-firmware 2026-02-05
dns-327l-firmware 2026-02-05
dns-340l-firmware 2026-02-05
dns-343-firmware 2026-02-05
dns-345-firmware 2026-02-05
dns-726-4-firmware 2026-02-05

References

Permissions Required, VDB Entry https://vuldb.com/?ctiid.351115
Third Party Advisory, VDB Entry https://vuldb.com/?id.351115
Third Party Advisory, VDB Entry https://vuldb.com/?submit.770401
Third Party Advisory, VDB Entry https://vuldb.com/?submit.770402
Third Party Advisory, VDB Entry https://vuldb.com/?submit.770403
Third Party Advisory, VDB Entry https://vuldb.com/?submit.770404
Third Party Advisory, VDB Entry https://vuldb.com/?submit.770405
Third Party Advisory, VDB Entry https://vuldb.com/?submit.770406
Third Party Advisory, VDB Entry https://vuldb.com/?submit.770407
Third Party Advisory, VDB Entry https://vuldb.com/?submit.770408

Similar Threats

Patch Gap Protection

Running software with known vulnerabilities?

BotEraser can help reduce exposure by blocking IPs associated with exploit activity — even before a patch is available.

Start Free →

No credit card required  ·  Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.