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Full vulnerability report · 2026
CVE-2026-4948High confidence

Firewalld: firewalld: local unprivileged user can modify firewall state due to d-bus setter mis-authorization

Red Hat · Red Hat Enterprise Linux 10

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 1 structured product or package state 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 16 Sep 2026

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • Exploitation requires an existing local or physical foothold with privileges.
  • EPSS is 0.18% 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 1 structured product or package state 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
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 · sourcefirewalldVendor fix publishedDebian records a fixed source-package version for this release.2.3.1-1+deb13u1Debian Security Tracker ↗Source updated 6 Oct 2026
Debian bookwormbookworm · sourcefirewalldVendor fix publishedDebian records a fixed source-package version for this release.1.3.3-1~deb12u2Debian Security Tracker ↗Source updated 6 Oct 2026
Debian forkyforky · sourcefirewalldVendor fix publishedDebian records a fixed source-package version for this release.2.4.0-2Debian Security Tracker ↗Source updated 6 Oct 2026
Debian sidsid · sourcefirewalldVendor fix publishedDebian records a fixed source-package version for this release.2.4.0-2Debian Security Tracker ↗Source updated 6 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivefirewalldUnder 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-2026-4948 · CSAF 2.0 · revision 3 · finalRed Hat Product Securityfirewalld: firewalld: Local unprivileged user can modify firewall state due to D-Bus setter mis-authorization
12 known affected

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

  • firewall-applet as a component of Red Hat Enterprise Linux 7
  • firewall-config as a component of Red Hat Enterprise Linux 7
  • firewalld as a component of Red Hat Enterprise Linux 7
  • firewalld-filesystem as a component of Red Hat Enterprise Linux 7
  • firewalld.src as a component of Red Hat Enterprise Linux 7
  • python-firewall as a component of Red Hat Enterprise Linux 7
  • firewall-applet as a component of Red Hat Enterprise Linux 8
  • firewall-config as a component of Red Hat Enterprise Linux 8
  • firewalld-filesystem as a component of Red Hat Enterprise Linux 8
  • firewalld.src as a component of Red Hat Enterprise Linux 8
  • python3-firewall as a component of Red Hat Enterprise Linux 8
  • openshift/ose-rhel-coreos-8 as a component of Red Hat OpenShift Container Platform 4
Summary
A flaw was found in firewalld. A local unprivileged user can exploit this vulnerability by mis-authorizing two runtime D-Bus (Desktop Bus) setters, setZoneSettings2 and setPolicySettings. This mis-authorization allows the user to modify the runtime firewall state without proper authentication, leading to unauthorized changes in network security configurations.
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-2026-16557

No EUVD known-exploited evidence

A flaw was found in firewalld. A local unprivileged user can exploit this vulnerability by mis-authorizing two runtime D-Bus (Desktop Bus) setters, setZoneSettings2 and setPolicySettings. This mis-authorization allows the user to modify the runtime firewall state without proper authentication, leading to unauthorized changes in network security configurations.

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 1 structured product or package state 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 firewalld. A local unprivileged user can exploit this vulnerability by mis-authorizing two runtime D-Bus (Desktop Bus) setters, setZoneSettings2 and setPolicySettings. This mis-authorization allows the user to modify the runtime firewall state without proper authentication, leading to unauthorized changes in network security configurations.

What

A flaw was found in firewalld. A local unprivileged user can exploit this vulnerability by mis-authorizing two runtime D-Bus (Desktop Bus) setters, setZoneSettings2 and setPolicySettings. This mis-authorization allows the user to modify the runtime firewall state without proper authentication, leading to unauthorized changes in network security configurations.

Why

While it is executing, the product sets the permissions of an object in a way that violates the intended permissions that have been specified by the user.

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 firewalld. A local unprivileged user can exploit this vulnerability by mis-authorizing two runtime D-Bus (Desktop Bus) setters, setZoneSettings2 and setPolicySettings. This mis-authorization allows the user to modify the runtime firewall state without proper authentication, leading to unauthorized changes in network security configurations.

Why

While it is executing, the product sets the permissions of an object in a way that violates the intended permissions that have been specified by the user.

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 → Incorrect Execution-Assigned Permissions → 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-279 ↗

CWE-279: Incorrect Execution-Assigned Permissions. While it is executing, the product sets the permissions of an object in a way that violates the intended permissions that have been specified by the user.

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:H/A:N

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.IHighIntegrity impact: A successful attack can cause a major loss.ANoneAvailability impact: No direct loss is represented by this metric.
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-279
A

Official authority intelligence

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

ENISA EUVD · EUVD-2026-16557Official EUVD mapping

A flaw was found in firewalld. A local unprivileged user can exploit this vulnerability by mis-authorizing two runtime D-Bus (Desktop Bus) setters, setZoneSettings2 and setPolicySettings. This mis-authorization allows the user to modify the runtime firewall state without proper authentication, leading to unauthorized changes in network security configurations.

Official EUVD record ↗
BSI · German · WID-SEC-2026-3382Red Hat Enterprise Linux (firewalld, leapp-repository, tesseract): Mehrere Schwachstellen

Ein lokaler Angreifer kann mehrere Schwachstellen in Red Hat Enterprise Linux ausnutzen, um beliebigen Code auszuführen, einschließlich der Ausführung von Code mit Root-Rechten, um Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren oder einen Denial-of-Service-Zustand auszulösen.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260401Security Bulletin 01 Apr 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 01 Apr 2026, published on 1 April 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0558Multiples vulnérabilités dans Microsoft Azure Linux

ssement et recommandations Flux RSS des bulletins d'actualité Premier Ministre S.G.D.S.N Agence nationale de la sécurité des systèmes d'information Paris, le 11 mai 2026 N° CERTFR-2026-AVI-0558 Affaire suivie par: CERT-FR Avis du CERT-FR Objet: Multiples vulnérabilités dans Microsoft Azure Linux Gestion du document Référence CERTFR-2026-AVI-0558 Titre Multiples vulnérabilités dans Microsoft Azure Linux Date de la première version 11 mai 2026 Date de la dernière version 11 mai 2026 Source(s) Bulletin de sécurité Microsoft CVE-2026-3219 du 23 avril 2026 Bulletin de sécurité Microsoft CVE-2026-41526 du 01 mai 2026 Bulletin de sécurité Microsoft CVE-2026-4948 du 02 mai 2026 Bulletin de sécurité Microsoft CVE-2026-6842 du 03 mai 2026 Bulletin de sécurité Microsoft CVE-2026-6843 du 03 mai 2026 Bulletin de sécurité Microsoft CVE-2026-37457 du 05 mai 2026 Bulletin de sécurité Microsoft CVE-2025-71290 du 07 mai 2026 Bulletin de sécurité Microsoft CVE-2025-71293 du 07 mai 2026 Bulletin de sécurité Microsoft CVE-2025-71294 du 07 mai 2026 Bulletin de sécurité Microsoft CVE-2026-43165 du 07 mai 2026 Bulletin de sécurité Microsoft CVE-2026-43176 du 07 mai 2026 Bulletin de sécurité Microsoft CVE-2026-43191 du 07 mai 2026 Bulletin de sécurité Microsoft CVE-2026-43195 du 07 mai 2026 Bulletin de sécurité Micro

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-014314firewalld等の複数ベンダの製品における割り当てられたパーミッションの実行に関する脆弱性

firewalldに脆弱性が発見されました。ローカルの権限のないユーザーは、2つのランタイムD-Bus（Desktop Bus）セッターであるsetZoneSettings2とsetPolicySettingsの誤った認可を利用して、この脆弱性を悪用できます。この誤った認可によって、ユーザーは適切な認証なしにランタイムのファイアウォールの状態を変更でき、不正なネットワークセキュリティ設定の変更を引き起こす可能性があります。

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 27 Mar 2026 · Last source change 16 Sept 2026, 12:13 UTC · CWE-279 · Incorrect Execution-Assigned Permissions

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-2026-16557
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD modified after 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/RHBA-2026:28238; removed remediation: access.redhat.com/RHSA-2026:67843; removed vendor advisory: access.redhat.com/RHSA-2026:67843.
    Before
    mitigation: access.redhat.com/CVE-2026-4948 · remediation: access.redhat.com/RHSA-2026:67843 · vendor advisory: access.redhat.com/RHSA-2026:67843 · 1 more references
    After
    mitigation: access.redhat.com/CVE-2026-4948 · remediation: access.redhat.com/RHBA-2026:28238 · vendor advisory: bugzilla.redhat.com/show_bug.cgi?id=2452086
    secalert@redhat.com ↗
  2. Vendor guidanceAuthoritative vendor guidance changed: added remediation: access.redhat.com/RHSA-2026:67843; added vendor advisory: access.redhat.com/RHSA-2026:67843; removed remediation: access.redhat.com/RHBA-2026:28238.
    Before
    mitigation: access.redhat.com/CVE-2026-4948 · remediation: access.redhat.com/RHBA-2026:28238 · vendor advisory: bugzilla.redhat.com/show_bug.cgi?id=2452086
    After
    mitigation: access.redhat.com/CVE-2026-4948 · remediation: access.redhat.com/RHSA-2026:67843 · vendor advisory: access.redhat.com/RHSA-2026:67843 · 1 more references
    access.redhat.com ↗
  3. Affected versionsThe structured affected or fixed version information changed.
    Before
    See the vendor and CVE records for the affected range. · Fixed: Red Hat Enterprise Linux 10: 0:2.4.2-1.el10_2 < *; Red Hat Enterprise Linux 9: 0:1.3.4-20.el9_8 < *
    After
    See the vendor and CVE records for the affected range. · Fixed: Red Hat Enterprise Linux 10: 0:2.4.2-1.el10_2 < *; Red Hat Enterprise Linux 10.0 Extended Update Support: 0:2.3.1-1.el10_0.1 < *; Red Hat Enterprise Linux 9: 0:1.3.4-20.el9_8 < *
    CNA ↗
  4. Affected versionsThe structured affected or fixed version information changed.
    Before
    firewall-applet as a component of Red Hat Enterprise Linux 7; firewall-config as a component of Red Hat Enterprise Linux 7; firewalld as a component of Red Hat Enterprise Linux 7; firewalld-filesystem as a component of Red Hat Enterprise Linux 7; firewalld.src as a component of Red Hat Enterprise Linux 7; python-firewall as a component of Red Hat Enterprise Linux 7; firewall-applet as a component of Red Hat Enterprise Linux 8; firewall-config as a component of Red Hat Enterprise Linux 8; firewalld-filesystem as a component of Red Hat Enterprise Linux 8; firewalld.src as a component of Red Hat Enterprise Linux 8; python3-firewall as a component of Red Hat Enterprise Linux 8; firewall-applet as a component of Red Hat Enterprise Linux 9; firewall-config as a component of Red Hat Enterprise Linux 9; firewalld-filesystem as a component of Red Hat Enterprise Linux 9; firewalld.src as a component of Red Hat Enterprise Linux 9; python3-firewall as a component of Red Hat Enterprise Linux 9; openshift/ose-rhel-coreos-8 as a component of Red Hat OpenShift Container Platform 4 · Fixed: firewall-applet-0:2.4.2-1.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); firewall-config-0:2.4.2-1.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); firewalld-0:2.4.2-1.el10_2.noarch as a component of Red Hat Enterprise Linux BaseOS (v. 10); firewalld-0:2.4.2-1.el10_2.src as a component of Red Hat Enterprise Linux BaseOS (v. 10); firewalld-filesystem-0:2.4.2-1.el10_2.noarch as a component of Red Hat Enterprise Linux BaseOS (v. 10); python3-firewall-0:2.4.2-1.el10_2.noarch as a component of Red Hat Enterprise Linux BaseOS (v. 10)
    After
    firewall-applet as a component of Red Hat Enterprise Linux 7; firewall-config as a component of Red Hat Enterprise Linux 7; firewalld as a component of Red Hat Enterprise Linux 7; firewalld-filesystem as a component of Red Hat Enterprise Linux 7; firewalld.src as a component of Red Hat Enterprise Linux 7; python-firewall as a component of Red Hat Enterprise Linux 7; firewall-applet as a component of Red Hat Enterprise Linux 8; firewall-config as a component of Red Hat Enterprise Linux 8; firewalld-filesystem as a component of Red Hat Enterprise Linux 8; firewalld.src as a component of Red Hat Enterprise Linux 8; python3-firewall as a component of Red Hat Enterprise Linux 8; openshift/ose-rhel-coreos-8 as a component of Red Hat OpenShift Container Platform 4 · Fixed: firewall-applet-0:2.3.1-1.el10_0.1.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); firewall-config-0:2.3.1-1.el10_0.1.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); firewall-applet-0:2.4.2-1.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); firewall-config-0:2.4.2-1.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); firewall-applet-0:1.3.4-20.el9_8.noarch as a component of Red Hat Enterprise Linux AppStream (v. 9); firewall-config-0:1.3.4-20.el9_8.noarch as a component of Red Hat Enterprise Linux AppStream (v. 9); firewalld-0:2.3.1-1.el10_0.1.noarch as a component of Red Hat Enterprise Linux BaseOS EUS (v. 10.0); firewalld-0:2.3.1-1.el10_0.1.src as a component of Red Hat Enterprise Linux BaseOS EUS (v. 10.0); firewalld-filesystem-0:2.3.1-1.el10_0.1.noarch as a component of Red Hat Enterprise Linux BaseOS EUS (v. 10.0); python3-firewall-0:2.3.1-1.el10_0.1.noarch as a component of Red Hat Enterprise Linux BaseOS EUS (v. 10.0); firewalld-0:2.4.2-1.el10_2.noarch as a component of Red Hat Enterprise Linux BaseOS (v. 10); firewalld-0:2.4.2-1.el10_2.src as a component of Red Hat Enterprise Linux BaseOS (v. 10); firewalld-filesystem-0:2.4.2-1.el10_2.noarch as a component of Red Hat Enterprise Linux BaseOS (v. 10); python3-firewall-0:2.4.2-1.el10_2.noarch as a component of Red Hat Enterprise Linux BaseOS (v. 10); firewalld-0:1.3.4-20.el9_8.noarch as a component of Red Hat Enterprise Linux BaseOS (v. 9); firewalld-0:1.3.4-20.el9_8.src as a component of Red Hat Enterprise Linux BaseOS (v. 9); firewalld-filesystem-0:1.3.4-20.el9_8.noarch as a component of Red Hat Enterprise Linux BaseOS (v. 9); python3-firewall-0:1.3.4-20.el9_8.noarch as a component of Red Hat Enterprise Linux BaseOS (v. 9)
    Red Hat Product Security ↗
  5. Vendor guidanceAuthoritative vendor guidance changed: added remediation: access.redhat.com/RHBA-2026:28238; removed remediation: access.redhat.com/RHSA-2026:67585; removed vendor advisory: access.redhat.com/RHSA-2026:67585.
    Before
    mitigation: access.redhat.com/CVE-2026-4948 · remediation: access.redhat.com/RHSA-2026:67585 · vendor advisory: access.redhat.com/RHSA-2026:67585 · 1 more references
    After
    mitigation: access.redhat.com/CVE-2026-4948 · remediation: access.redhat.com/RHBA-2026:28238 · vendor advisory: bugzilla.redhat.com/show_bug.cgi?id=2452086
    secalert@redhat.com ↗
  6. Vendor guidanceAuthoritative vendor guidance changed: added remediation: access.redhat.com/RHSA-2026:67585; added vendor advisory: access.redhat.com/RHSA-2026:67585; removed remediation: access.redhat.com/RHBA-2026:28238.
    Before
    mitigation: access.redhat.com/CVE-2026-4948 · remediation: access.redhat.com/RHBA-2026:28238 · vendor advisory: bugzilla.redhat.com/show_bug.cgi?id=2452086
    After
    mitigation: access.redhat.com/CVE-2026-4948 · remediation: access.redhat.com/RHSA-2026:67585 · vendor advisory: access.redhat.com/RHSA-2026:67585 · 1 more references
    access.redhat.com ↗
  7. Affected versionsThe structured affected or fixed version information changed.
    Before
    See the vendor and CVE records for the affected range. · Fixed: Red Hat Enterprise Linux 10: 0:2.4.2-1.el10_2 < *
    After
    See the vendor and CVE records for the affected range. · Fixed: Red Hat Enterprise Linux 10: 0:2.4.2-1.el10_2 < *; Red Hat Enterprise Linux 9: 0:1.3.4-20.el9_8 < *
    CNA ↗
  8. Affected versionsThe structured affected or fixed version information changed.
    Before
    firewall-applet as a component of Red Hat Enterprise Linux 7; firewall-config as a component of Red Hat Enterprise Linux 7; firewalld as a component of Red Hat Enterprise Linux 7; firewalld-filesystem as a component of Red Hat Enterprise Linux 7; firewalld.src as a component of Red Hat Enterprise Linux 7; python-firewall as a component of Red Hat Enterprise Linux 7; firewall-applet as a component of Red Hat Enterprise Linux 8; firewall-config as a component of Red Hat Enterprise Linux 8; firewalld-filesystem as a component of Red Hat Enterprise Linux 8; firewalld.src as a component of Red Hat Enterprise Linux 8; python3-firewall as a component of Red Hat Enterprise Linux 8; firewall-applet as a component of Red Hat Enterprise Linux 9; firewall-config as a component of Red Hat Enterprise Linux 9; firewalld-filesystem as a component of Red Hat Enterprise Linux 9; firewalld.src as a component of Red Hat Enterprise Linux 9; python3-firewall as a component of Red Hat Enterprise Linux 9 · Fixed: firewall-applet-0:2.4.2-1.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); firewall-config-0:2.4.2-1.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); firewalld-0:2.4.2-1.el10_2.noarch as a component of Red Hat Enterprise Linux BaseOS (v. 10); firewalld-0:2.4.2-1.el10_2.src as a component of Red Hat Enterprise Linux BaseOS (v. 10); firewalld-filesystem-0:2.4.2-1.el10_2.noarch as a component of Red Hat Enterprise Linux BaseOS (v. 10); python3-firewall-0:2.4.2-1.el10_2.noarch as a component of Red Hat Enterprise Linux BaseOS (v. 10)
    After
    firewall-applet as a component of Red Hat Enterprise Linux 7; firewall-config as a component of Red Hat Enterprise Linux 7; firewalld as a component of Red Hat Enterprise Linux 7; firewalld-filesystem as a component of Red Hat Enterprise Linux 7; firewalld.src as a component of Red Hat Enterprise Linux 7; python-firewall as a component of Red Hat Enterprise Linux 7; firewall-applet as a component of Red Hat Enterprise Linux 8; firewall-config as a component of Red Hat Enterprise Linux 8; firewalld-filesystem as a component of Red Hat Enterprise Linux 8; firewalld.src as a component of Red Hat Enterprise Linux 8; python3-firewall as a component of Red Hat Enterprise Linux 8; firewall-applet as a component of Red Hat Enterprise Linux 9; firewall-config as a component of Red Hat Enterprise Linux 9; firewalld-filesystem as a component of Red Hat Enterprise Linux 9; firewalld.src as a component of Red Hat Enterprise Linux 9; python3-firewall as a component of Red Hat Enterprise Linux 9; openshift/ose-rhel-coreos-8 as a component of Red Hat OpenShift Container Platform 4 · Fixed: firewall-applet-0:2.4.2-1.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); firewall-config-0:2.4.2-1.el10_2.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10); firewalld-0:2.4.2-1.el10_2.noarch as a component of Red Hat Enterprise Linux BaseOS (v. 10); firewalld-0:2.4.2-1.el10_2.src as a component of Red Hat Enterprise Linux BaseOS (v. 10); firewalld-filesystem-0:2.4.2-1.el10_2.noarch as a component of Red Hat Enterprise Linux BaseOS (v. 10); python3-firewall-0:2.4.2-1.el10_2.noarch as a component of Red Hat Enterprise Linux BaseOS (v. 10)
    Red Hat Product Security ↗
  9. Affected versionsThe structured affected or fixed version information changed.
    Before
    See the vendor and CVE records for the affected range. · Fixed: 0:2.4.2-1.el10_2 < *
    After
    See the vendor and CVE records for the affected range. · Fixed: Red Hat Enterprise Linux 10: 0:2.4.2-1.el10_2 < *
    CNA ↗
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-2026-16557↗Mitigation reference↗Vendor advisory↗CVE authority or vendor reference↗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-2026-4948 · cve.blacktree.nl