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Highest advisory severityCritical 2 vendors · 3 advisories

CVE-2026-111943

Man-in-the-middle attacks via untrusted intermediate certificates

CVE-2026-111943: Man-in-the-middle attacks via untrusted intermediate certificates. Not in the CISA KEV catalog. Critical advisory severity (CVSS 6.8, Red Hat).

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

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CVE-2026-111943 key facts

CISA KEV
Not listed (catalog checked )
Highest advisory severity
Critical
CVSS base score
6.8 (Red Hat), 6.8 (Veeam)
Weakness
CWE-295
Fixed releases
  • Red Hat: stf/sg-core-rhel9:1792760108, openshift4/ose-csi-snapshot-controller-rhel9:1792874101, openshift4/openshift-route-controller-manager-rhel9:1792771347, openshift4/ose-azure-cloud-controller-manager-rhel9:1792771270, openshift4/ose-nutanix-machine-controllers-rhel9:1792872635, openshift4/ose-gcp-pd-csi-driver-operator-rhel9:1792853897 and 15 more in the advisory
  • Veeam: 9.0.9
Vendor advisories
3 from Red Hat, Veeam
VulniPulse record
Published · Updated

Scores, vectors, weaknesses and fixed releases are quoted from vendor advisories that cover only CVE-2026-111943; bulletin-wide values are not repeated here.

Is CVE-2026-111943 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-111943 is not in the CISA KEV catalog (checked ) and no tracked advisory for it reports exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-111943?

Upgrade to a fixed release named by the vendor:

  • Red Hat: stf/sg-core-rhel9:1792760108, openshift4/ose-csi-snapshot-controller-rhel9:1792874101, openshift4/openshift-route-controller-manager-rhel9:1792771347, openshift4/ose-azure-cloud-controller-manager-rhel9:1792771270, openshift4/ose-nutanix-machine-controllers-rhel9:1792872635, openshift4/ose-gcp-pd-csi-driver-operator-rhel9:1792853897
  • Veeam: 9.0.9
  • See the security bulletin for a detailed mitigation procedure. (Red Hat)
  • Upgrade to Veeam Kasten for Kubernetes 9.0.9 or later, which contains the listed security fixes. (Veeam)

Vendor advisory comparison

Red Hat

1 advisory
  • Advisory severityMedium6.8

    Medium [CVE-2026-111943] Man-in-the-middle attacks via untrusted intermediate certificates

    CVE-2026-111943Source published Source updated

    Man-in-the-middle attacks via untrusted intermediate certificates. Red Hat rates this important (CVSS 6.8). Weakness: CWE-295. Red Hat lists fixing advisory RHSA-2026:86908 with package stf/sg-core-rhel9:1792760108, openshift4/ose-csi-snapshot-controller-rhel9:1792874101, openshift4/openshift-route-controller-manager-rhel9:1792771347, openshift4/ose-azure-cloud-controller-manager-rhel9:1792771270. Affected product named by the advisory: Red Hat Enterprise Linux 9.

    Related products — impact not confirmed
    • Red Hat Enterprise Linux 9
    Source-reported affected versions
    Affected-version details not available in this record.
    Source-reported fixed versions
    • stf/sg-core-rhel9:1792760108
    • openshift4/ose-csi-snapshot-controller-rhel9:1792874101
    • openshift4/openshift-route-controller-manager-rhel9:1792771347
    • openshift4/ose-azure-cloud-controller-manager-rhel9:1792771270

    17 more entries in the full advisory.

    Mitigation guidance
    • See the security bulletin for a detailed mitigation procedure.
    Full advisory and evidenceOpen source bulletin

Veeam

2 advisories
  • Advisory severityCritical

    Critical [CVE-2020-14040 +102] List of Security Fixes and Improvements in Veeam Kasten for Kubernetes

    KB4825Source published

    This bulletin covers 103 CVEs. The products, versions, score and guidance below describe the bulletin; check its source for applicability to this specific CVE.

    List of Security Fixes and Improvements in Veeam Kasten for Kubernetes KB ID: 4825 Product: Kasten K10 by Veeam | 3 | 5 | 5.5 | 6 | 6.5 Published: 2026-03-02 Last Modified: Purpose This article aims to provide our customers' security and compliance teams with detailed information on security improvements. - Veeam Kasten for Kubernetes — Release Notes - Upgraded the frontend's bundled JavaScript dependencies to resolve GHSA-g2v6-rqmx-r4w6 in @vue/server-renderer (High). - Also resolves 7 Medium severity CVEs in the same and other packages. - Upgraded to latest UBI base image to resolve multiple CVEs in base OS packages. - Updated the Go runtime to resolve additional upstream Go CVEs. - Updated the bundled Prometheus Helm chart to resolve security issues. - Upgraded the Prometheus base…

    Related products — impact not confirmed
    No product details extracted. Check the source bulletin.
    Source-reported affected versions
    Affected-version details not available in this record.
    Source-reported fixed versions
    • 8.5.10
    • 8.5.5
    • 1.26.1
    • 8.5.3

    20 more entries in the full advisory.

    Mitigation guidance
    • List of Security Fixes and Improvements in Veeam Kasten for Kubernetes KB ID: 4825 Product: Veeam Kasten for Kubernetes | 7 | 7.5 | 8 | 8.5 | 9 Kasten K10 by Veeam | 3 | 5 | 5.5 | 6 | 6.5 Published: 2026-03-02 Last Modified: 2026-10-23 Purpose This article describes all security-related fixes and improvements introduced in each release or update of Veeam Kasten for Kubernetes.
    • It is recommended to upgrade Veeam Kasten and to refresh the token by manually logging out.
    • Mitigation: Configure a bucket-level Default Object Lock retention so the object store stamps new objects at write time, or upgrade to Kasten 8.5.10.
    • Veeam Kasten for Kubernetes 8.5.5 Upgrade to Go 1.26.1 to address CVE-2026-25679 and CVE-2026-27142 Updated the UBI base image to address CVE-2026-4111 Veeam Kasten for Kubernetes 8.5.3 Upgrade to Go 1.25.7 to address CVE-2025-61732.

    4 more entries in the full advisory.

    Workarounds
    • Veeam Kasten for Kubernetes 8.0.14 Improved logging security for specific block mode datamover upload Pod invocations.
    Full advisory and evidenceOpen source bulletin
  • Advisory severityMedium6.8

    Medium [CVE-2026-111943] Mitigating Impact of Compromised eMudhra Intermediate CA Certificates on Veeam Kasten for Kubernetes

    KB4954Source published

    Mitigating Impact of Compromised eMudhra Intermediate CA Certificates on Veeam Kasten for Kubernetes KB ID: 4954 Product: Published: 2026-10-22 Last Modified: Issue Summary Until these intermediates are blocked, anyone holding a recovered key can issue certificates that TLS clients trust. According to eMudhra's statement on the incident, none of the affected intermediates issued any certificates, and eMudhra is not aware of any evidence that the weak keys were exploited before the issue was disclosed. How This Impacts Veeam Kasten for Kubernetes Veeam Kasten for Kubernetes components use TLS to connect to the following external endpoints: - Object storage and cloud provider storage APIs - OIDC and LDAPS identity providers - Veeam Backup & Replication - Veeam Data Cloud Vault - Cloud…

    Related products — impact not confirmed
    No product details extracted. Check the source bulletin.
    Source-reported affected versions
    • 9.0.8
    • 1.27.3
    • 1.27.2
    Source-reported fixed versions
    • 9.0.9
    Mitigation guidance
    • Upgrade to Veeam Kasten for Kubernetes 9.0.9 or later, which contains the listed security fixes.
    Full advisory and evidenceOpen source bulletin

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