CVE-2022-38955

Name: CVE-2022-38955
Creator: NVD / NIST
Published: 2022-09-20T18:15:10.36+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.30%

Last modified Jun 17, 2026

CVE-2022-38955 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An exploitable firmware modification vulnerability was discovered on the Netgear WPN824EXT WiFi Range Extender. An attacker can conduct a MITM attack to modify the user-uploaded firmware image and bypass the CRC check. EPSS estimates a 0.30% chance of exploitation in the next 30 days.

Description

An exploitable firmware modification vulnerability was discovered on the Netgear WPN824EXT WiFi Range Extender. An attacker can conduct a MITM attack to modify the user-uploaded firmware image and bypass the CRC check. A successful attack can either introduce a backdoor to the device or make the device DoS. This affects Firmware Version: 1.1.1_1.1.9.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.30%

21.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Netgear	Wpn824ext Firmware	1.1.1_1.1.9

References

https://hackmd.io/%40eupX2KdkT6iNpqJUWk9p4A/SyAnOSd1s
https://www.netgear.com/about/security/Vendor Advisory
https://hackmd.io/%40eupX2KdkT6iNpqJUWk9p4A/SyAnOSd1s
https://www.netgear.com/about/security/Vendor Advisory

Timeline

Published: Sep 20, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-38955?

How severe is CVE-2022-38955?

CVE-2022-38955 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.30% probability of exploitation in the next 30 days.

How do I fix CVE-2022-38955?

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-2022-38955?

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

Scan your code now

Source: NVD / NIST