CVE-2021-33358

Name: CVE-2021-33358
Creator: NVD / NIST
Published: 2021-06-09T18:15:08.71+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 2.74%

Last modified Jun 17, 2026

CVE-2021-33358 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Multiple vulnerabilities exist in RaspAP 2.3 to 2.6.5 in the "interface", "ssid" and "wpa_passphrase" POST parameters in /hostapd, when the parameter values contain special characters such as ";" or "$()" which enables an authenticated attacker to execute arbitrary OS commands.. EPSS estimates a 2.74% chance of exploitation in the next 30 days.

Description

Multiple vulnerabilities exist in RaspAP 2.3 to 2.6.5 in the "interface", "ssid" and "wpa_passphrase" POST parameters in /hostapd, when the parameter values contain special characters such as ";" or "$()" which enables an authenticated attacker to execute arbitrary OS commands.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

2.74%

84.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Raspap	Raspap	>= 2.3, <= 2.6.5

References

https://gist.github.com/omriinbar/52c000c02a6992c6ce68d531195f69cfThird Party Advisory
https://github.com/RaspAP/raspap-webgui/blob/8f0ae3b36aa1020d21477e66010c6b2146e7c222/app/img/wifi-qr-code.phpExploit, Third Party Advisory
https://github.com/RaspAP/raspap-webgui/blob/b02660d5ff8d9faa5d3ef49778b23e832851e0f4/includes/hostapd.phpExploit, Third Party Advisory
https://gist.github.com/omriinbar/52c000c02a6992c6ce68d531195f69cfThird Party Advisory
https://github.com/RaspAP/raspap-webgui/blob/8f0ae3b36aa1020d21477e66010c6b2146e7c222/app/img/wifi-qr-code.phpExploit, Third Party Advisory
https://github.com/RaspAP/raspap-webgui/blob/b02660d5ff8d9faa5d3ef49778b23e832851e0f4/includes/hostapd.phpExploit, Third Party Advisory

Timeline

Published: Jun 9, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-33358?

How severe is CVE-2021-33358?

CVE-2021-33358 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 2.74% probability of exploitation in the next 30 days.

How do I fix CVE-2021-33358?

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-2021-33358?

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

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Source: NVD / NIST