02 Records
FEED: ACQUIRING
01 RecordSTATE: PUBLISHED
02 Description
CNA: kubernetesKubernetes C# Client: improper certificate validation in custom CA mode may lead to man-in-the-middle attacks
03 Exploitation and scoring
SRC: CISA, FIRST, NVD, RED HAT- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.- EPSS probability
- 0.31% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Ranks above 23.0% of scored records. A rank, not a probability.
- NVD base score
- 6.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
- NVD analysis status
- Deferred. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
SCHEMA: 5.2
- Published
- 2025-09-16 21:08Z11 MO AGO
- Last updated
- 2025-11-04 21:15Z10 MO AGO
- Reserved
- 2025-08-29
- Assigning CNA
- kubernetes
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.8)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
- Weaknesses
- CWE-295Improper Certificate ValidationBase
- Data version
- 5.2
- Document digest
- 8bc77aeb579081e57f5ef317a703ff643d2f5ceaf7047029830c0e8ecf12a9d7
05 Affected products
PAIRS: 1VendorProductVersionsPlatforms
SRC: CNA
Deploy the patch version of the Kubernetes C# client as soon as possible. Alternatively, move the CA certificates into the system trust store instead of specifying them in the kubeconfig file. Note: This approach may introduce new risks, as all processes on the system will begin to trust certificates signed by that CA. If you must use an affected version, you can disable custom CA and add the CA to the machine's trusted root.