CVE-2020-26879

Name: CVE-2020-26879
Creator: NVD / NIST
Published: 2020-10-26T20:15:14.537+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 42.48%

Last modified Jun 17, 2026

CVE-2020-26879 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Ruckus vRioT through 1.5.1.0.21 has an API backdoor that is hardcoded into validate_token.py. An unauthenticated attacker can interact with the service API by using a backdoor value as the Authorization header.. EPSS estimates a 42.48% chance of exploitation in the next 30 days.

Description

Ruckus vRioT through 1.5.1.0.21 has an API backdoor that is hardcoded into validate_token.py. An unauthenticated attacker can interact with the service API by using a backdoor value as the Authorization header.

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

42.48%

98.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-798

Affected Software

Vendor	Product	Versions
Commscope	Ruckus Vriot	<= 1.5.1.0.21

References

https://adepts.of0x.ccThird Party Advisory
https://adepts.of0x.cc/ruckus-vriot-rce/Exploit, Third Party Advisory
https://support.ruckuswireless.com/documentsVendor Advisory
https://support.ruckuswireless.com/security_bulletins/305Product, Vendor Advisory
https://twitter.com/TheXC3LLThird Party Advisory
https://x-c3ll.github.ioThird Party Advisory
https://adepts.of0x.ccThird Party Advisory
https://adepts.of0x.cc/ruckus-vriot-rce/Exploit, Third Party Advisory
https://support.ruckuswireless.com/documentsVendor Advisory
https://support.ruckuswireless.com/security_bulletins/305Product, Vendor Advisory
https://twitter.com/TheXC3LLThird Party Advisory
https://x-c3ll.github.ioThird Party Advisory

Timeline

Published: Oct 26, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-26879?

How severe is CVE-2020-26879?

CVE-2020-26879 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 42.48% probability of exploitation in the next 30 days.

How do I fix CVE-2020-26879?

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-2020-26879?

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

Scan your code now

Source: NVD / NIST