CVE-2023-20820

Name: CVE-2023-20820
Creator: NVD / NIST
Published: 2023-09-04T03:15:07.84+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10EPSS 1.19%

Last modified Jun 17, 2026

CVE-2023-20820 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. In wlan service, there is a possible command injection due to improper input validation. This could lead to remote code execution with System execution privileges needed. EPSS estimates a 1.19% chance of exploitation in the next 30 days.

Description

In wlan service, there is a possible command injection due to improper input validation. This could lead to remote code execution with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00244189; Issue ID: WCNCR00244189.

Metrics

CVSS 3.1

7.2/10

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

EPSS Probability

1.19%

64.1th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Openwrt	Openwrt	19.07.0
Openwrt	Openwrt	21.02.0

References

https://corp.mediatek.com/product-security-bulletin/September-2023Vendor Advisory
https://corp.mediatek.com/product-security-bulletin/September-2023Vendor Advisory

Timeline

Published: Sep 4, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-20820?

How severe is CVE-2023-20820?

CVE-2023-20820 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 1.19% probability of exploitation in the next 30 days.

How do I fix CVE-2023-20820?

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-2023-20820?

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

Scan your code now

Source: NVD / NIST