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CVE-2020-26879

66
FAUCET Score

CVE-2020-26879 describes a critical API backdoor in Ruckus vRioT through version 1.5.1.0.21, affecting CommScope Ruckus IoT Module and vRioT products. An unauthenticated attacker can bypass authentication by using a hardcoded backdoor value in the Authorization header, granting full access to the service API. This vulnerability has a CVSS score of 9.8 (Critical) due to its network-based attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. While not listed in CISA KEV, Nuclei templates exist for exploitation, and it has garnered significant community discussion and media coverage, indicating high awareness despite no confirmed active exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.5.1.0.21CPE matchmatch criteria
cpe:2.3:a:commscope:ruckus_vriot:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
45.08%
Probability of exploitation in next 30 days
EPSS Percentile
98.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2020-26879 · Jun 11, 2025
This CVE's current EPSS score of 0.4508 is in the 96th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

nessuspatch availablevia llm_extracted
Fixed in: 1.1
View patch
debianvendor investigatingvia llm_extracted
View patch

Vendor Advisories (2)

debianllm-debian-5eaa1c0cdf0b8424

Ruckus IoT Controller Remote Command Execution Vulnerability (CVE-2020-26878, CVE-2020-26879)

Oct 26, 2020
nessusllm-nessus-5eadc05e9be23e5b

Ruckus IoT Controller Remote Command Execution Vulnerability (CVE-2020-26878, CVE-2020-26879)

Oct 26, 2020

References

adepts.of0x.cc
Third Party Advisory
adepts.of0x.cc / ruckus-vriot-rce
ExploitThird Party Advisory
support.ruckuswireless.com / documents
Vendor Advisory
support.ruckuswireless.com / security_bulletins/305
ProductVendor Advisory
twitter.com / TheXC3LL
Third Party Advisory
x-c3ll.github.io
Third Party Advisory