CVE-2022-30521

Name: CVE-2022-30521
Creator: NVD / NIST
Published: 2022-06-02T14:15:53.897+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 13.64%

Last modified Jun 17, 2026

CVE-2022-30521 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 13.64% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

13.64%

96.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Dlink	Dir-890l Firmware	<= 1.07b09

References

https://github.com/winmt/CVE/blob/main/DIR-890L/README.mdExploit, Third Party Advisory
https://github.com/winmt/my-vuls/tree/main/DIR-890L
https://www.dlink.com/en/security-bulletin/Vendor Advisory
https://github.com/winmt/CVE/blob/main/DIR-890L/README.mdExploit, Third Party Advisory
https://github.com/winmt/my-vuls/tree/main/DIR-890L
https://www.dlink.com/en/security-bulletin/Vendor Advisory

Timeline

Published: Jun 2, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-30521?

How severe is CVE-2022-30521?

CVE-2022-30521 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 13.64% probability of exploitation in the next 30 days.

How do I fix CVE-2022-30521?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-30521?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST