CVE-2026-5213
8.8 · HIGHOverview
CVE-2026-5213 is a high-severity vulnerability affecting dlink dnr-202l_firmware. It was published on March 31, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
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-343, DNS-345, DNS-726-4, DNS-1100-4, DNS-1200-05 and DNS-1550-04 up to 20260205. The affected element is the function cgi_adduser_to_session of the file /cgi-bin/account_mgr.cgi. This manipulation of the argument read_list causes stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized.
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-2026-5213?
CVE-2026-5213 is a high-severity vulnerability affecting dlink dnr-202l_firmware. It was published on March 31, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).
How severe is CVE-2026-5213?
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-5213?
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-2026-5213?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-5213 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.
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