CVE-2026-4203CRITICAL 9.8EPSS p88.7%
CVE-2026-4203CVE-2026-4203
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.
Scoring
| CVSS 3.1 | 9.8 (CRITICAL) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 3.83% probability of exploitation · percentile 88.7% · 2026-06-19T12:03:05Z |
| Published | 2026-03-16 |
| Last modified | 2026-04-29 |
Underlying weaknesses· 2
References
- https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_122/122.md
- https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_123/123.md
- https://vuldb.com/?ctiid.351115
- https://vuldb.com/?id.351115
- https://vuldb.com/?submit.770401
- https://vuldb.com/?submit.770402
- https://vuldb.com/?submit.770403
- https://vuldb.com/?submit.770404
2
| Type | Target | Confidence | Tier |
|---|---|---|---|
| Weakness | Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')cwe-74 | 0% | live |
| Weakness | Improper Neutralization of Special Elements used in a Command ('Command Injection')cwe-77 | 0% | live |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.