CVE-2026-12392

EUVD-2026-91775
An information exposure vulnerability in Canonical MAAS prior to versions 3.4.10, 3.5.14, 3.6.5, 3.7.3, and 3.8.0 allows an unauthenticated attacker to retrieve the RPC secret in plaintext via the vendor data metadata endpoint. If a target machine was deployed with the 'register as rack' option enabled, an attacker who obtains or infers the machine's system ID can query the preseed/metadata server to leak the secret.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
canonicalCNA
5.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
canonicalmaas
3.4.0 ≤
𝑥
< 3.4.10
CNA
canonicalmaas
3.5.0 ≤
𝑥
< 3.5.14
CNA
canonicalmaas
3.6.0 ≤
𝑥
< 3.6.5
CNA
canonicalmaas
3.7.0 ≤
𝑥
< 3.7.3
CNA
canonicalmaas
𝑥
< 3.8.0
CNA