Security readout for executives and security teams
Plain-English summary
Hazelcast allowed authenticated users to run executor tasks on cluster members even when they lacked the required permissions. This is not described as unauthenticated access, but it can weaken internal authorization boundaries in affected Hazelcast clusters.
Executive priority
Treat as a prioritized internal authorization issue for Hazelcast environments. Urgency rises if many users or applications have authenticated cluster access, or if Hazelcast supports sensitive workflows.
Technical view
CVE-2023-33265 affects Hazelcast through 5.0.4, 5.1 through 5.1.6, and 5.2 through 5.2.3. Executor services did not properly check client permissions, allowing authenticated clients to execute tasks on members without granted permissions.
Likely exposure
Exposure is most likely where affected Hazelcast versions are used and authenticated client users can access executor services. The provided sources do not identify specific deployment defaults or affected configurations beyond the version ranges.
Exploitation context
The sources do not report active exploitation, and the CVE is not listed as KEV. Abuse requires authenticated access, but could allow unauthorized task execution inside a Hazelcast cluster.
Researcher notes
Evidence is limited: no CVSS, CWE, exploit details, or patch version is included in the bundle. The core issue is improper permission enforcement for executor services after authentication, not documented unauthenticated compromise.
Mitigation direction
- Identify Hazelcast clusters in the affected version ranges.
- Review Hazelcast advisory guidance before applying remediation.
- Upgrade to a vendor-supported fixed release when confirmed by Hazelcast.
- Restrict Hazelcast client access to trusted users and networks.
- Review permissions for users allowed to access executor services.
Validation and detection
- Inventory Hazelcast versions across production and non-production clusters.
- Confirm whether executor services are enabled or reachable by clients.
- Review client roles and permissions for executor-service access.
- Check Hazelcast logs for unexpected executor task activity.
- After remediation, verify versions and authorization behavior.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2023-33265 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/hazelcast/hazelcastCVE reference
- https://support.hazelcast.com/s/article/Security-Advisory-for-CVE-2023-33265CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.