How severe is CVE-2020-26879?

CVE-2020-26879 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-26879 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 42% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-26879?

CVE-2020-26879 affects Commscope Ruckus Vriot. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-26879?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2020-26879 published?

CVE-2020-26879 was published on 2020-10-26 and last updated on 2026-06-17.

CVE-2020-26879

CVE-2020-26879 is a critical-severity vulnerability in Commscope Ruckus Vriot with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 42% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-798.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 42% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Commscope Ruckus Vriot
Published: 2020-10-26
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2020-26879?: 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.
How severe is CVE-2020-26879?: CVE-2020-26879 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-26879 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 42% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-26879?: CVE-2020-26879 affects Commscope Ruckus Vriot. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-26879?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-26879 published?: CVE-2020-26879 was published on 2020-10-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:commscope:ruckus_vriot:*:*:*:*:*:*:*:*

More vulnerabilities in Commscope Ruckus Vriot

CVE-2020-26878 — High (CVSS 8.8): Ruckus through 1.5.1.0.21 is affected by remote command injection. An authenticated user can submit a query to the API…

All CVEs affecting Commscope Ruckus Vriot →

Other CWE-798 (Use of Hard-coded Credentials) vulnerabilities

CVE-2026-13768 — Critical (CVSS 10.0): Gardyn devices expose a privileged iothubowner key. Access to this key will allow a malicious user to invoke an IoTHub…
CVE-2026-45631 — Critical (CVSS 10.0): Dokploy is a free, self-hostable Platform as a Service (PaaS). From 0.27.0 to before 0.29.3, a hardcoded…
CVE-2026-22769 — Critical (CVSS 10.0): Dell RecoverPoint for Virtual Machines, versions prior to 6.0.3.1 HF1, contain a hardcoded credential vulnerability.…
CVE-2025-42890 — Critical (CVSS 10.0): SQL Anywhere Monitor (Non-GUI) baked credentials into the code,exposing the resources or functionality to unintended…
CVE-2025-7503 — Critical (CVSS 10.0): An OEM IP camera manufactured by Shenzhen Liandian Communication Technology LTD exposes a Telnet service (port 23) with…
CVE-2025-20309 — Critical (CVSS 10.0): A vulnerability in Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session…

Browse all CWE-798 (Use of Hard-coded Credentials) vulnerabilities →