CVE-2026-5311
5.3 · MEDIUMOverview
CVE-2026-5311 is a medium-severity vulnerability affecting dlink dnr-202l_firmware. It was published on April 1, 2026 and has a CVSS 3.1 base score of 5.3 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
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, DNS-343, DNS-345, DNS-726-4, DNS-1100-4, DNS-1200-05 and DNS-1550-04 up to 20260205. Affected is the function Webdav_Access_List of the file /cgi-bin/file_center.cgi. Performing a manipulation of the argument cmd results in improper access controls. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks.
Remediation
Check the references section for vendor advisories and patches from dlink. Update dnr-202l_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| dlink | dnr-202l_firmware | 0 | Affected |
| dlink | dnr-326_firmware | 0 | Affected |
| dlink | dns-1100-4_firmware | 0 | Affected |
| dlink | dns-120_firmware | 0 | Affected |
| dlink | dns-1200-05_firmware | 0 | Affected |
| dlink | dns-1550-04_firmware | 0 | Affected |
| dlink | dns-315l_firmware | 0 | Affected |
| dlink | dns-320_firmware | 0 | Affected |
| dlink | dns-320l_firmware | 0 | Affected |
| dlink | dns-320lw_firmware | 0 | Affected |
Frequently Asked Questions
What is CVE-2026-5311?
CVE-2026-5311 is a medium-severity vulnerability affecting dlink dnr-202l_firmware. It was published on April 1, 2026 and has a CVSS 3.1 base score of 5.3 (MEDIUM).
How severe is CVE-2026-5311?
This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-5311?
Check the references section for vendor advisories and patches from dlink. Update dnr-202l_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-5311?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-5311 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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