CVE-2026-6653

criticalpriority · track · 39EPSS 0.004 · 29 %ileDEEUFRNLUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.36% (29th) EPSS

CVSS 9.8 · critical

Is it mine?

47 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · cert_bund · ncsc_nl

EPSS · scored 2026-10-27

Use After Free in libxml2's xmlParseInternalSubset from GNOME libxml2 version 2.9.11 to 2.11.0 allows a remote attacker to cause a denial-of-service via maliciously crafted XML input with improper entity resolution handling.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedRTU500 series CMU Firmwarecisa_csaf_ot
Update to CMU Firmware version 12.7.8 OR
MitigationRTU500 series CMU Firmwarecisa_csaf_ot
Follow general mitigation factors/workarounds

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 4.9–9.8

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · CISA US

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · NCSC-NL NL

v4.07highCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:Psecondary · ENISA EU

v4.07highCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · security@ubuntu.com

v4.04.9mediumCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-416USCWE-416USCWE-416USCWE-611US

affected products (47)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Communicationsall versionscert_bundDEcpe:/a:oracle:communications:8.0-8.3
Communicationsall versionscert_bundDEcpe:/a:oracle:communications:8.0-8.1
Communicationsall versionscert_bundDEcpe:/a:oracle:communications:7.5.1
Communicationsall versionscert_bundDEcpe:/a:oracle:communications:7.0.0
Communicationsall versionscert_bundDEcpe:/a:oracle:communications:47.0.0.2.0
Communicationsall versionscert_bundDEcpe:/a:oracle:communications:26.1.202
Communicationsall versionscert_bundDEcpe:/a:oracle:communications:26.1.200
Communicationsall versionscert_bundDEcpe:/a:oracle:communications:25.2.202
Communicationsall versionscert_bundDEcpe:/a:oracle:communications:24.2.4-25.2.000
Communicationsall versionscert_bundDEcpe:/a:oracle:communications:25.2.201
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
IBM Power Hardware Management Consoleall versionscert_bundDEcpe:/a:ibm:hardware_management_console:-
IBM Security Verify Accessall versionscert_bundDEcpe:/a:ibm:security_verify_access:-
Oracle Communications 11.0all versionscert_bundDEcpe:/a:oracle:communications:11.0
Oracle Communications 14.0all versionscert_bundDEcpe:/a:oracle:communications:14.0
Oracle Communications 15.0.0.0.0all versionscert_bundDEcpe:/a:oracle:communications:15.0.0.0.0
Oracle Communications 15.0.1.0.0all versionscert_bundDEcpe:/a:oracle:communications:15.0.1.0.0
Oracle Communications 15.1.0.0.0all versionscert_bundDEcpe:/a:oracle:communications:15.1.0.0.0
Oracle Communications 15.2.0.0.0all versionscert_bundDEcpe:/a:oracle:communications:15.2.0.0.0

showing 20 of 47

advisories (6)

Vendor and ecosystem advisories describing this.

NCSC-2026-0444Kwetsbaarheden verholpen in Oracle CommunicationsNL2026-10-21csaf · ncsc_nlNL
Oracle heeft 110 kwetsbaarheden verholpen in diverse Oracle Communications-producten, waaronder Oracle Communications Unified Assurance, Oracle Communications Cloud Native Core Security Edge Protection Proxy, Oracle Communications Service Catalog and Design en Oracle Communications Operations Monitor.
WID-SEC-W-2026-2037libxml2: Schwachstelle ermöglicht Denial of ServiceDeutsch2026-06-22csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in libxml2 ausnutzen, um einen Denial of Service Angriff durchzuführen.
WID-SEC-W-2026-3038Meinberg LANTIME: Mehrere SchwachstellenDeutsch2026-08-26csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Meinberg LANTIME ausnutzen, um beliebigen Code auszuführen, Berechtigungen zu erweitern, Sicherheitsmaßnahmen zu umgehen, sensible Informationen offenzulegen, Daten zu manipulieren oder Denial-of-Service-Zustände herbeizuführen.
WID-SEC-W-2026-4090Oracle Communications: Mehrere SchwachstellenDeutsch2026-10-20csaf · cert_bundDE
Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in Oracle Communications ausnutzen, um die Vertraulichkeit, Integrität und Verfügbarkeit zu gefährden.
ICSA-26-293-05Hitachi Energy RTU500 Product2026-09-01icsa · cisa_csaf_otUS
Hitachi Energy is aware of vulnerabilities that affect RTU500 product versions listed in this document. These vulnerabilities if exploited can have impact on confidentiality, integrity and availability of the product. Please refer to the Recommended Immediate Actions for information about the mitigation/remediation.
CERTFR-2026-AVI-1385Multiples vulnérabilités dans les produits VMwareFrançais2026-10-26vendor · certfrFR

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund ncsc_nl cisa_csaf_ot certfr NVD CVE.org MITRE

published 2026-06-22modified 2026-10-25

references (6)

External citations — patches, advisories, analysis.

https://bugs.launchpad.net/ubuntu/+source/libxml2/+bug/2141260 cnnvd
https://gitlab.gnome.org/GNOME/libxml2/-/work_items/1058 cnnvd
https://bugs.launchpad.net/ubuntu/+source/libxml2/+bug/2141260 enisa_euvd
https://gitlab.gnome.org/GNOME/libxml2/-/work_items/1058 enisa_euvd
https://bugs.launchpad.net/ubuntu/+source/libxml2/+bug/2141260ExploitIssue TrackingThird Party Advisorynvd
https://gitlab.gnome.org/GNOME/libxml2/-/work_items/1058ExploitIssue TrackingPatchnvd

scry

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