CVE-2022-30521
9.8 · CRITICALOverview
CVE-2022-30521 is a critical-severity vulnerability affecting dlink dir-890l_firmware. It was published on June 2, 2022 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
The LAN-side Web-Configuration Interface has Stack-based Buffer Overflow vulnerability in the D-Link Wi-Fi router firmware DIR-890L DIR890LA1_FW107b09.bin and previous versions. The function created at 0x17958 of /htdocs/cgibin will call sprintf without checking the length of strings in parameters given by HTTP header and can be controlled by users easily. The attackers can exploit the vulnerability to carry out arbitrary code by means of sending a specially constructed payload to port 49152.
Remediation
Check the references section for vendor advisories and patches from dlink. Update dir-890l_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 | dir-890l_firmware | 0 | Affected |
References
Frequently Asked Questions
What is CVE-2022-30521?
CVE-2022-30521 is a critical-severity vulnerability affecting dlink dir-890l_firmware. It was published on June 2, 2022 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2022-30521?
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2022-30521?
Check the references section for vendor advisories and patches from dlink. Update dir-890l_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-2022-30521?
CyberStrike's AI-powered security agents can automatically detect CVE-2022-30521 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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