What’s Vulnerable › Vulnerabilities

CVE-2021-32001: K3s/RKE2 bootstrap data is encrypted with empty string if user does not supply a token

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-07-28 · updated 2026-06-17
• Weakness: CWE-311

Description

K3s in SUSE Rancher allows any user with direct access to the datastore, or a copy of a datastore backup, to extract the cluster's confidential keying material (cluster certificate authority private keys, secrets encryption configuration passphrase, etc.) and decrypt it, without having to know the token value. This issue affects: SUSE Rancher K3s version v1.19.12+k3s1, v1.20.8+k3s1, v1.21.2+k3s1 and prior versions; RKE2 version v1.19.12+rke2r1, v1.20.8+rke2r1, v1.21.2+rke2r1 and prior versions.

Affected products

• SUSE Rancher K3S: 1.19.12, 1.20.8, 1.21.2
• SUSE RKE2: 1.19.12, 1.20.8, 1.21.2

References

• https://bugzilla.suse.com/show_bug.cgi?id=1188453
• https://bugzilla.suse.com/show_bug.cgi?id=1188453

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