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SRC: CVELISTV5 / SYNC: T-15M / LAG: 51M / REC: 386,830 / REV: C6-1C / V4

01 RecordSTATE: PUBLISHED

CVE-2026-16242

Hypershift: konnectivity proxy-server accepts agent connections without validating client certificates

CriticalPUBLISHEDCNA: redhat

CNA base score9.4 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

02 Description

CNA: redhat

Hypershift: konnectivity proxy-server accepts agent connections without validating client certificates

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.
AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
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

0.80% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 53.9% of scored records. A rank, not a probability.

NVD base score

9.4 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-08-26.

Red Hat severity

Critical. Red Hat's rating for its own products, not a CVSS rating.

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.

04 Metadata

SCHEMA: 5.2

Published

2026-07-20 07:33Z1 MO AGO

Last updated

2026-08-26 16:18Z9 DAYS AGO

Reserved

2026-07-20

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Critical (CVSS 9.4)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

Weaknesses

CWE-306Missing Authentication for Critical FunctionBase

Data version

5.2

Document digest

e2be7bcc6425dd54f81823f4b5576b19f20bbb5265a722c8c6bf781f7bbd28bc

05 Affected products

PAIRS: 20

VendorProductVersionsPlatforms

Red Hatmulticluster engine for Kubernetes 2.10Not specified—

Red Hatmulticluster engine for Kubernetes 2.11Not specified—

Red Hatmulticluster engine for Kubernetes 2.17Not specified—

Red Hatmulticluster engine for Kubernetes 2.6Not specified—

Red Hatmulticluster engine for Kubernetes 2.8Not specified—

Red Hatmulticluster engine for Kubernetes 2.9Not specified—

Red HatRed Hat OpenShift Container Platform 4.14Not specified—

Red HatRed Hat OpenShift Container Platform 4.15Not specified—

Red HatRed Hat OpenShift Container Platform 4.16Not specified—

Red HatRed Hat OpenShift Container Platform 4.17Not specified—

Red HatRed Hat OpenShift Container Platform 4.18Not specified—

Red HatRed Hat OpenShift Container Platform 4.19Not specified—

Red HatRed Hat OpenShift Container Platform 4.20Not specified—

Red HatRed Hat OpenShift Container Platform 4.21Not specified—

Red HatRed Hat OpenShift Container Platform 4.22Not specified—

Red HatLogging Subsystem for Red Hat OpenShiftNot specified—

Red HatMulticluster Engine for KubernetesNot specified—

Red HatOpenShift API for Data ProtectionNot specified—

Red HatRed Hat Advanced Cluster Management for Kubernetes 2Not specified—

Red HatRed Hat OpenShift Container Platform 4Not specified—

06 References

REFS: 19

access.redhat.comRHSA-2026:46885https://access.redhat.com/errata/RHSA-2026:46885vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2026:47388https://access.redhat.com/errata/RHSA-2026:47388vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2026:47728https://access.redhat.com/errata/RHSA-2026:47728vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2026:47735https://access.redhat.com/errata/RHSA-2026:47735vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2026:47949https://access.redhat.com/errata/RHSA-2026:47949vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2026:47953https://access.redhat.com/errata/RHSA-2026:47953vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2026:47974https://access.redhat.com/errata/RHSA-2026:47974vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2026:48284https://access.redhat.com/errata/RHSA-2026:48284vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2026:48657https://access.redhat.com/errata/RHSA-2026:48657vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2026:48670https://access.redhat.com/errata/RHSA-2026:48670vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2026:48676https://access.redhat.com/errata/RHSA-2026:48676vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2026:48693https://access.redhat.com/errata/RHSA-2026:48693vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2026:48699https://access.redhat.com/errata/RHSA-2026:48699vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2026:50758https://access.redhat.com/errata/RHSA-2026:50758vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2026:56789https://access.redhat.com/errata/RHSA-2026:56789vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2026:56912https://access.redhat.com/errata/RHSA-2026:56912vendor-advisoryx_refsource_REDHAT
access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-16242vdb-entryx_refsource_REDHAT
bugzilla.redhat.comRHBZ#2502690https://bugzilla.redhat.com/show_bug.cgi?id=2502690issue-trackingx_refsource_REDHAT
github.comhttps://github.com/openshift/hypershift/pull/9031