What’s Vulnerable › Vulnerabilities

CVE-2020-5426: Scheduler for TAS can transmit privileged UAA token in plaintext

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-11-11 · updated 2026-06-17
• Weakness: CWE-319

Description

Scheduler for TAS prior to version 1.4.0 was permitting plaintext transmission of UAA client token by sending it over a non-TLS connection. This also depended on the configuration of the MySQL server which is used to cache a UAA client token used by the service. If intercepted the token can give an attacker admin level access in the cloud controller.

Affected products

• VMware Tanzu Pivotal Scheduler: before 1.4.0 — fixed in 1.4.0
• VMware Tanzu Pivotal Scheduler: before 1.4.0 — fixed in 1.4.0

How to fix

Upgrade to a fixed version: VMware Tanzu Pivotal Scheduler 1.4.0; VMware Tanzu Pivotal Scheduler 1.4.0. Check the vendor advisory for mitigations.

References

• https://tanzu.vmware.com/security/cve-2020-5426
• https://tanzu.vmware.com/security/cve-2020-5426

Get alerted when CVE-2020-5426 or the next vulnerability affects your stack