Security readout for executives and security teams
CVE-2023-2728 is a Kubernetes policy bypass affecting a narrow configuration. In affected clusters, a highly privileged user may use ephemeral containers to bypass a ServiceAccount secret-mounting restriction, potentially exposing secrets that policy intended to block. Exposure is limited to Kubernetes v1.24.14, v1.25.0-v1.25.10, v1.26.0-v1.26.5, and v1.27.0-v1.27.2 clusters using ServiceAccount admission, enforce-mountable-secrets, and ephemeral containers. Treat as a targeted Kubernetes hardening issue, not an internet-wide emergency. Prioritize clusters with sensitive secrets and broad developer or operator access to ephemeral containers. Mitigation focus: Upgrade Kubernetes beyond the affected version ranges per Kubernetes guidance.; Check managed Kubernetes or appliance vendor advisories for affected downstream builds.; Restrict who can use ephemeral containers in sensitive namespaces..
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
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ATT&CK lookup starting points
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CWE-20: Exact CWE lookup
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Open ATT&CK lookupContainer behavior lookup
The affected technology mentions containers, so container-specific ATT&CK technique review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-2728 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N1.25.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://groups.google.com/g/kubernetes-security-announce/c/vPWYJ_L84m8CVE reference · mailing-list
- https://github.com/kubernetes/kubernetes/issues/118640CVE reference · issue-tracking
- https://security.netapp.com/advisory/ntap-20230803-0004/CVE 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.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.