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Full vulnerability report · 2026
CVE-2026-16730High confidence

Dbus-broker: dbus-broker: session bus denial of service via emfile during peer setup

Red Hat · Red Hat Enterprise Linux 10

Official source article: Red Hat RHSA-2026:61340 ↗. Check the applicable product and release in the original source.

5.5MediumCVSS 3.1
Recommended action
Patch only the product branches with a verified fix

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority. Verified remediation exists for at least one product or source, but 4 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityMediumOperational priority:Low, lowered one band.downgradedsince 10 Sep 2026

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • Exploitation requires an existing local or physical foothold with privileges.
  • EPSS is 0.11% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict local access and enforce least privilege on affected hosts.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Red Hat Red Hat Enterprise Linux 10 and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: No default targetRemediation target: Normal maintenance

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Cross-source reconciliation

Remediation availability differs by product scope

Verified remediation exists for at least one product or source, but 4 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Distribution package intelligence

Release-specific package status

Debian, ubuntu findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

5 package states
Package result overrides the generic status

BlackTree has verified remediation for at least one product or source, but the relevant distribution still reports no fixed package for 4 affected package states shown here. Treat those rows as affected with no fix until that distribution publishes a fixed version.

Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Distribution releaseSource packageVendor stateFixed versionEvidence
Debian trixietrixie · sourcedbus-brokerAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian bookwormbookworm · sourcedbus-brokerAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian forkyforky · sourcedbus-brokerAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian sidsid · sourcedbus-brokerAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivedbus-brokerUnder evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
CVE-2026-16730 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitydbus-broker: dbus-broker: session bus denial of service via EMFILE during peer setup
2 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • dbus-broker.src as a component of Red Hat Hardened Images
  • openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4
Summary
A flaw was found in dbus-broker. When the process file-descriptor limit is reached, EMFILE/ENFILE errors during peer setup (notably SO_PEERPIDFD) are handled as fatal failures, causing the broker to exit. A local attacker who can open many connections to the user session bus can trigger this and deny service to the desktop session. Flatpak applications can reach the host session bus through the dbus proxy.
Remediation
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-48559

No EUVD known-exploited evidence

A flaw was found in dbus-broker. When the process file-descriptor limit is reached, EMFILE/ENFILE errors during peer setup (notably SO_PEERPIDFD) are handled as fatal failures, causing the broker to exit. A local attacker who can open many connections to the user session bus can trigger this and deny service to the desktop session. Flatpak applications can reach the host session bus through the dbus proxy.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
5.5 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionPatch only the product branches with a verified fix

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority. Verified remediation exists for at least one product or source, but 4 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
01

What, why and how

A flaw was found in dbus-broker. When the process file-descriptor limit is reached, EMFILE/ENFILE errors during peer setup (notably SO_PEERPIDFD) are handled as fatal failures, causing the broker to exit. A local attacker who can open many connections to the user session bus can trigger this and deny service to the desktop session. Flatpak applications can reach the host session bus through the dbus proxy.

What

A flaw was found in dbus-broker. When the process file-descriptor limit is reached, EMFILE/ENFILE errors during peer setup (notably SO_PEERPIDFD) are handled as fatal failures, causing the broker to exit. A local attacker who can open many connections to the user session bus can trigger this and deny service to the desktop session. Flatpak applications can reach the host session bus through the dbus proxy.

Why

The product does not handle or incorrectly handles an exceptional condition.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

A flaw was found in dbus-broker. When the process file-descriptor limit is reached, EMFILE/ENFILE errors during peer setup (notably SO_PEERPIDFD) are handled as fatal failures, causing the broker to exit. A local attacker who can open many connections to the user session bus can trigger this and deny service to the desktop session. Flatpak applications can reach the host session bus through the dbus proxy.

Why

The product does not handle or incorrectly handles an exceptional condition.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
local access → Improper Handling of Exceptional Conditions → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Local
Privileges required
Low: a basic authenticated account is required
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-755 ↗

CWE-755: Improper Handling of Exceptional Conditions. The product does not handle or incorrectly handles an exceptional condition.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
CWE-755
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2026-48559Official EUVD mapping

A flaw was found in dbus-broker. When the process file-descriptor limit is reached, EMFILE/ENFILE errors during peer setup (notably SO_PEERPIDFD) are handled as fatal failures, causing the broker to exit. A local attacker who can open many connections to the user session bus can trigger this and deny service to the desktop session. Flatpak applications can reach the host session bus through the dbus proxy.

Official EUVD record ↗
BSI · German · WID-SEC-2026-3095Red Hat Enterprise Linux (pipewire,dbus-broker): Mehrere Schwachstellen ermöglichen Denial of Service

Ein Angreifer kann mehrere Schwachstellen in Red Hat Enterprise Linux ausnutzen, um einen Denial of Service Angriff durchzuführen.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260729Security Bulletin 29 Jul 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 29 Jul 2026, published on 29 July 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix availability varies by product
Affected
Fixed
Action
Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 24 Jul 2026 · Last source change 10 Sept 2026, 17:23 UTC · CWE-755 · Improper Handling of Exceptional Conditions

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2026-48559
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD awaiting enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Vendor guidanceAuthoritative vendor guidance changed: added remediation: access.redhat.com/RHSA-2026:61340.
    Before
    no authoritative guidance recorded
    After
    remediation: access.redhat.com/RHSA-2026:61340
    CNA ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    See the vendor and CVE records for the affected range. · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    See the vendor and CVE records for the affected range. · Fixed: Red Hat Enterprise Linux 10: 0:36-5.el10_2 < *; Red Hat Enterprise Linux 9: 0:28-9.el9_8 < *; Red Hat Update Infrastructure 5: 1788880445 < *, 1788880464 < *, 1788880456 < *, 1788765051 < *, 1788880581 < *
    CNA ↗
  3. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    CNA ↗
  4. Vendor guidanceAuthoritative vendor guidance changed: added remediation: access.redhat.com/RHSA-2026:61340; removed remediation: access.redhat.com/RHSA-2026:66018; removed vendor advisory: access.redhat.com/RHSA-2026:66018.
    Before
    remediation: access.redhat.com/RHSA-2026:66018 · vendor advisory: access.redhat.com/RHSA-2026:66018
    After
    remediation: access.redhat.com/RHSA-2026:61340
    CNA ↗
  5. Vendor guidanceAuthoritative vendor guidance changed: added remediation: access.redhat.com/RHSA-2026:66018; added vendor advisory: access.redhat.com/RHSA-2026:66018; removed remediation: access.redhat.com/RHSA-2026:61340.
    Before
    remediation: access.redhat.com/RHSA-2026:61340
    After
    remediation: access.redhat.com/RHSA-2026:66018 · vendor advisory: access.redhat.com/RHSA-2026:66018
    access.redhat.com ↗
  6. Affected versionsThe structured affected or fixed version information changed.
    Before
    See the vendor and CVE records for the affected range. · Fixed: 0:36-5.el10_2 < *; 0:28-9.el9_8 < *
    After
    See the vendor and CVE records for the affected range. · Fixed: 0:36-5.el10_2 < *; 0:28-9.el9_8 < *; 1788880445 < *; 1788880464 < *; 1788880456 < *; 1788765051 < *; 1788880581 < *
    CNA ↗
  7. Affected versionsThe structured affected or fixed version information changed.
    Before
    dbus-broker.src as a component of Red Hat Hardened Images; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4 · Fixed: dbus-broker-0:36-5.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-0:36-5.el10_2.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-0:36-5.el10_2.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-0:36-5.el10_2.src as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-0:36-5.el10_2.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-debuginfo-0:36-5.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-debuginfo-0:36-5.el10_2.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-debuginfo-0:36-5.el10_2.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-debuginfo-0:36-5.el10_2.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-debugsource-0:36-5.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-debugsource-0:36-5.el10_2.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-debugsource-0:36-5.el10_2.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-debugsource-0:36-5.el10_2.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-0:28-9.el9_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-0:28-9.el9_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-0:28-9.el9_8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-0:28-9.el9_8.src as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-0:28-9.el9_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-debuginfo-0:28-9.el9_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-debuginfo-0:28-9.el9_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-debuginfo-0:28-9.el9_8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-debuginfo-0:28-9.el9_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-debugsource-0:28-9.el9_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-debugsource-0:28-9.el9_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-debugsource-0:28-9.el9_8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-debugsource-0:28-9.el9_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
    After
    dbus-broker.src as a component of Red Hat Hardened Images; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4 · Fixed: dbus-broker-0:36-5.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-0:36-5.el10_2.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-0:36-5.el10_2.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-0:36-5.el10_2.src as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-0:36-5.el10_2.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-debuginfo-0:36-5.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-debuginfo-0:36-5.el10_2.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-debuginfo-0:36-5.el10_2.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-debuginfo-0:36-5.el10_2.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-debugsource-0:36-5.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-debugsource-0:36-5.el10_2.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-debugsource-0:36-5.el10_2.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-debugsource-0:36-5.el10_2.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-0:28-9.el9_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-0:28-9.el9_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-0:28-9.el9_8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-0:28-9.el9_8.src as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-0:28-9.el9_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-debuginfo-0:28-9.el9_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-debuginfo-0:28-9.el9_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-debuginfo-0:28-9.el9_8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-debuginfo-0:28-9.el9_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-debugsource-0:28-9.el9_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-debugsource-0:28-9.el9_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-debugsource-0:28-9.el9_8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-debugsource-0:28-9.el9_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); registry.redhat.io/rhui5/cds-kubernetes-rhel9@sha256:7840142734dad76221aa6846ab6e8aacc913a8017e4c5c956d574f78b8dfa98d_amd64 as a component of Red Hat Update Infrastructure 5; registry.redhat.io/rhui5/cds-rhel9@sha256:53eede6ba9dc80a9430d598f63e6ea9dbfb7f92b2cf778577c692ec2af8c9499_amd64 as a component of Red Hat Update Infrastructure 5; registry.redhat.io/rhui5/haproxy-rhel9@sha256:3460a52ef50810d3a1077fd21d13b0d07e51e50af6f41958afa8e319b2954a1c_amd64 as a component of Red Hat Update Infrastructure 5; registry.redhat.io/rhui5/installer-rhel9@sha256:4184dd496e0c466b594d035371df0801b54e4825f91016d47cd0003b99ce87c7_amd64 as a component of Red Hat Update Infrastructure 5; and 1 more
    Red Hat Product Security ↗
  8. Vendor guidanceAuthoritative vendor guidance changed: added remediation: access.redhat.com/RHSA-2026:61340.
    Before
    no authoritative guidance recorded
    After
    remediation: access.redhat.com/RHSA-2026:61340
    CNA ↗
  9. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    CNA ↗
  10. Vendor guidanceAuthoritative vendor guidance changed: removed vendor advisory: access.redhat.com/RHSA-2026:61340; removed vendor advisory: access.redhat.com/RHSA-2026:61355.
    Before
    remediation: access.redhat.com/RHSA-2026:61340 · vendor advisory: access.redhat.com/RHSA-2026:61340 · vendor advisory: access.redhat.com/RHSA-2026:61355
    After
    remediation: access.redhat.com/RHSA-2026:61340
    CNA ↗
  11. Vendor guidanceAuthoritative vendor guidance changed: added remediation: access.redhat.com/RHSA-2026:61340; added vendor advisory: access.redhat.com/RHSA-2026:61340; 1 further additions.
    Before
    no authoritative guidance recorded
    After
    remediation: access.redhat.com/RHSA-2026:61340 · vendor advisory: access.redhat.com/RHSA-2026:61340 · vendor advisory: access.redhat.com/RHSA-2026:61355
    access.redhat.com ↗
  12. Affected versionsThe structured affected or fixed version information changed.
    Before
    See the vendor and CVE records for the affected range. · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    See the vendor and CVE records for the affected range. · Fixed: 0:36-5.el10_2 < *; 0:28-9.el9_8 < *
    CNA ↗
  13. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    access.redhat.com ↗
  14. Vendor guidanceAuthoritative vendor guidance changed from remediation: access.redhat.com/CVE-2026-16730 to remediation: access.redhat.com/CVE-2026-16730.
    Before
    remediation: access.redhat.com/CVE-2026-16730
    After
    remediation: access.redhat.com/CVE-2026-16730
    Red Hat Product Security ↗
  15. Remediation statusRemediation status changed from Mitigation available to Patch available.
    Before
    Mitigation available
    After
    Patch available
    Red Hat Product Security ↗
  16. Affected versionsThe structured affected or fixed version information changed.
    Before
    dbus-broker.src as a component of Red Hat Enterprise Linux 10; dbus-broker as a component of Red Hat Enterprise Linux 9; dbus-broker.src as a component of Red Hat Enterprise Linux 9; dbus-broker.src as a component of Red Hat Hardened Images; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4
    After
    dbus-broker.src as a component of Red Hat Hardened Images; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4 · Fixed: dbus-broker-0:36-5.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-0:36-5.el10_2.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-0:36-5.el10_2.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-0:36-5.el10_2.src as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-0:36-5.el10_2.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-debuginfo-0:36-5.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-debuginfo-0:36-5.el10_2.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-debuginfo-0:36-5.el10_2.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-debuginfo-0:36-5.el10_2.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-debugsource-0:36-5.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-debugsource-0:36-5.el10_2.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-debugsource-0:36-5.el10_2.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-debugsource-0:36-5.el10_2.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10); dbus-broker-0:28-9.el9_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-0:28-9.el9_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-0:28-9.el9_8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-0:28-9.el9_8.src as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-0:28-9.el9_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-debuginfo-0:28-9.el9_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-debuginfo-0:28-9.el9_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-debuginfo-0:28-9.el9_8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-debuginfo-0:28-9.el9_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-debugsource-0:28-9.el9_8.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-debugsource-0:28-9.el9_8.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-debugsource-0:28-9.el9_8.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9); dbus-broker-debugsource-0:28-9.el9_8.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
    Red Hat Product Security ↗
  17. Affected versionsThe structured affected or fixed version information changed.
    Before
    See the vendor and CVE records for the affected range. · Fixed: 0:36-5.el10_2 < *; 0:28-9.el9_8 < *; 1788880445 < *; 1788880464 < *; 1788880456 < *; 1788765051 < *; 1788880581 < *
    After
    See the vendor and CVE records for the affected range. · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  18. Vendor guidanceAuthoritative vendor guidance changed: removed remediation: access.redhat.com/RHSA-2026:61340.
    Before
    remediation: access.redhat.com/RHSA-2026:61340
    After
    no authoritative guidance recorded
    CNA ↗
  19. Affected versionsThe structured affected or fixed version information changed.
    Before
    See the vendor and CVE records for the affected range. · Fixed: 0:36-5.el10_2 < *; 0:28-9.el9_8 < *
    After
    See the vendor and CVE records for the affected range. · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  20. Remediation statusRemediation status changed from Patch available to Awaiting fix.
    Before
    Patch available
    After
    Awaiting fix
    CNA ↗
  21. Affected versionsThe structured affected or fixed version information changed.
    Before
    dbus-broker.src as a component of Red Hat Enterprise Linux 10; dbus-broker as a component of Red Hat Enterprise Linux 9; dbus-broker.src as a component of Red Hat Enterprise Linux 9; dbus-broker.src as a component of Red Hat Hardened Images; rhcos as a component of Red Hat OpenShift Container Platform 4
    After
    dbus-broker.src as a component of Red Hat Enterprise Linux 10; dbus-broker as a component of Red Hat Enterprise Linux 9; dbus-broker.src as a component of Red Hat Enterprise Linux 9; dbus-broker.src as a component of Red Hat Hardened Images; openshift/ose-rhel-coreos-9 as a component of Red Hat OpenShift Container Platform 4
    Red Hat Product Security ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2026-48559↗Vendor CSAF · Red Hat Product Security↗CVE authority or vendor reference · Red Hat RHSA-2026:61340↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-16730 · cve.blacktree.nl