CVE-2026-42013

highpriority · track · 0EPSS 0.004 · 36 %ileDEEUFRNLRUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.42% (36th) EPSS

CVSS 8.2 · high

Is it mine?

85 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

A flaw was found in gnutls. When validating certificates, an oversized Subject Alternative Name (SAN) could cause the validation process to incorrectly fall back to checking the Common Name (CN) field. This could allow a remote attacker to bypass proper certificate validation, potentially leading to spoofing or man-in-the-middle attacks.

cvss

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

8.2

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.18.2highAV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:Nsecondary · FSTEC (BDU) RU

v3.18.2highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:Nsecondary · ENISA EU

v3.18.2highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:Nsecondary · secalert@redhat.com USexploitability 3.9 · impact 4.2

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

v3.18.2highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:Nsecondary · NCSC-NL NL

ssvc

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

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-1284USCWE-295USCWE-295US

affected products (85)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Dell Avamarall versionscert_bundDEcpe:/a:dell:avamar:-
Dell NetWorkerall versionscert_bundDEcpe:/a:dell:networker:-
F5 BIG-IPall versionscert_bundDEcpe:/a:f5:big-ip:-
F5 F5OSall versionscert_bundDEcpe:/o:f5:f5os:-
IBM MQ Operatorall versionscert_bundDEcpe:/a:ibm:mq:operator
Microsoft Azure Linux azl3all versionscert_bundDEcpe:/o:microsoft:azure_linux:azl3
NetApp ActiveIQ Unified Manager for VMware vSphereall versionscert_bundDEcpe:/a:netapp:active_iq_unified_manager:for_vmware_vsphere
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
RESF Rocky Linuxall versionscert_bundDEcpe:/o:resf:rocky_linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Red Hat OpenShift Container Platformall versionscert_bundDEcpe:/a:redhat:openshift:container_platform
Red Hat OpenShift Container Platform 4.22.4all versionscert_bundDEcpe:/a:redhat:openshift:container_platform_4.22.4
Red Hat OpenShift Container Platform release 4.20.28all versionscert_bundDEcpe:/a:redhat:openshift:container_platform_release_4.20.28
Red Hat OpenStack Container Platform release 4.21.23all versionscert_bundDEcpe:/a:redhat:openstack:container_platform_release_4.21.23
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
SUSE openSUSEall versionscert_bundDEcpe:/o:suse:opensuse:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
Dell Secure Connect Gateway< 5.36.00.16cert_bundDE

showing 20 of 85

advisories (5)

Vendor and ecosystem advisories describing this.

NCSC-2026-0431Kwetsbaarheden verholpen in IBM DataPower Gateway en onderliggende componentenNL2026-10-16csaf · ncsc_nlNL
IBM heeft meerdere beveiligingsproblemen opgelost in DataPower Gateway versies 10.5 tot 11.0 en een veelvoud aan onderliggende subcomponenten.
WID-SEC-W-2026-1312GnuTLS: Mehrere SchwachstellenDeutsch2026-04-29csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in GnuTLS ausnutzen, um Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand zu verursachen oder andere, nicht näher spezifizierte Angriffe durchzuführen.
WID-SEC-W-2026-3043IBM QRadar SIEM: Mehrere SchwachstellenDeutsch2026-08-26csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in IBM QRadar SIEM ausnutzen, um Sicherheitsvorkehrungen zu umgehen, um seine Privilegien zu erhöhen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um Dateien zu manipulieren, um einen Cross-Site Scripting Angriff durchzuführen und um beliebigen Programmcode auszuführen.
WID-SEC-W-2026-3623IBM DataPower Gateway: Mehrere SchwachstellenDeutsch2026-09-28csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in IBM DataPower Gateway ausnutzen, um beliebigen Programmcode auszuführen, erweiterte Berechtigungen zu erlangen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren oder offenzulegen, einen Denial-of-Service-Zustand auszulösen oder Cross-Site-Scripting-Angriffe durchzuführen.
CERTFR-2026-AVI-1385Multiples vulnérabilités dans les produits VMwareFrançais2026-10-26vendor · certfrFR

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund ncsc_nl certfr NVD CVE.org MITRE

published 2026-05-26modified 2026-09-17

references (48)

External citations — patches, advisories, analysis.

scry

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