CVE-2026-33343

Published: Mar 26, 2026 Last Modified: Mar 26, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 6,5
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: none
Availability: none

Description

AI Translation Available

etcd is a distributed key-value store for the data of a distributed system. Prior to versions 3.4.42, 3.5.28, and 3.6.9, an authenticated user with RBAC restricted permissions on key ranges can use nested transactions to bypass all key-level authorization. This allows any authenticated user with direct access to etcd to effectively ignore all key range restrictions, accessing the entire etcd data store. Kubernetes does not rely on etcd’s built-in authentication and authorization. Instead, the API server handles authentication and authorization itself, so typical Kubernetes deployments are not affected. Versions 3.4.42, 3.5.28, and 3.6.9 contain a patch. If upgrading is not immediately possible, reduce exposure by treating the affected RPCs as unauthenticated in practice. Restrict network access to etcd server ports so only trusted components can connect and require strong client identity at the transport layer, such as mTLS with tightly scoped client certificate distribution.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0003
Percentile
0,1th
Updated

Single Data Point

Only one EPSS measurement is available for this CVE. Trend analysis requires multiple data points over time.

863

Incorrect Authorization

Incomplete
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Integrity Access Control Availability
Potential Impacts:
Read Application Data Read Files Or Directories Modify Application Data Modify Files Or Directories Gain Privileges Or Assume Identity Bypass Protection Mechanism Execute Unauthorized Code Or Commands Dos: Crash, Exit, Or Restart Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Dos: Resource Consumption (Other)
Applicable Platforms
Technologies: Database Server, Not Technology-Specific, Web Server
Likelihood of Exploit: High
View CWE Details
Application

Etcd by Etcd

Product Information
Vendor Etcd
Product Etcd
Version Range Affected
From 3.5.0 (inclusive)
To 3.5.28 (exclusive)
cpe:2.3:a:etcd:etcd:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Etcd by Etcd

Product Information
Vendor Etcd
Product Etcd
Version Range Affected
From 3.6.0 (inclusive)
To 3.6.9 (exclusive)
cpe:2.3:a:etcd:etcd:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Etcd by Etcd

Product Information
Vendor Etcd
Product Etcd
Version Range Affected
To 3.4.42 (exclusive)
cpe:2.3:a:etcd:etcd:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://github.com/etcd-io/etcd/security/advisories/GHSA-rf…
https://github.com/etcd-io/etcd/security/advisories/GHSA-rfx7-8w68-q57q