CVE-2026-27135: nghttp2 before 1.68.1 (exclusive), < 1.68.1; +37 more affected products

Affected technology

nghttp2 · before 1.68.1 (exclusive)
nghttp2

nghttp2 · < 1.68.1
nghttp2

JBoss Core Services for RHEL 8 · Exact affected versions not specified by the source
Red Hat

JBoss Core Services on RHEL 7 · Exact affected versions not specified by the source
Red Hat

Red Hat Enterprise Linux 10 · Exact affected versions not specified by the source
Red Hat

Red Hat Enterprise Linux 10.0 Extended Update Support · Exact affected versions not specified by the source
Red Hat

Red Hat Enterprise Linux 8 · Exact affected versions not specified by the source
Red Hat

Red Hat Enterprise Linux 8.2 Advanced Update Support · Exact affected versions not specified by the source
Red Hat

Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support · Exact affected versions not specified by the source
Red Hat

Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On · Exact affected versions not specified by the source
Red Hat

Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support · Exact affected versions not specified by the source
Red Hat

Red Hat Enterprise Linux 8.6 Telecommunications Update Service · Exact affected versions not specified by the source
Red Hat

Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions · Exact affected versions not specified by the source
Red Hat

Red Hat Enterprise Linux 8.8 Telecommunications Update Service · Exact affected versions not specified by the source
Red Hat

Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions · Exact affected versions not specified by the source
Red Hat

Red Hat Enterprise Linux 9 · Exact affected versions not specified by the source
Red Hat

Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions · Exact affected versions not specified by the source
Red Hat

Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions · Exact affected versions not specified by the source
Red Hat

Red Hat Enterprise Linux 9.4 Extended Update Support · Exact affected versions not specified by the source
Red Hat

Red Hat Enterprise Linux 9.6 Extended Update Support · Exact affected versions not specified by the source
Red Hat

Red Hat JBoss Core Services 2.4.62.SP4 · Exact affected versions not specified by the source
Red Hat

Red Hat OpenShift Container Platform 4.12 · Exact affected versions not specified by the source
Red Hat

Red Hat OpenShift Container Platform 4.13 · Exact affected versions not specified by the source
Red Hat

Red Hat OpenShift Container Platform 4.14 · Exact affected versions not specified by the source
Red Hat

Red Hat OpenShift Container Platform 4.15 · Exact affected versions not specified by the source
Red Hat

Red Hat OpenShift Container Platform 4.16 · Exact affected versions not specified by the source
Red Hat

Red Hat OpenShift Container Platform 4.17 · Exact affected versions not specified by the source
Red Hat

Red Hat OpenShift Container Platform 4.18 · Exact affected versions not specified by the source
Red Hat

Red Hat OpenShift Container Platform 4.19 · Exact affected versions not specified by the source
Red Hat

RHEL-8 based Middleware Containers · Exact affected versions not specified by the source
Red Hat

Red Hat AI Inference Server 3.2 · Exact affected versions not specified by the source
Red Hat

Red Hat AI Inference Server 3.3 · Exact affected versions not specified by the source
Red Hat

Red Hat Discovery 2 · Exact affected versions not specified by the source
Red Hat

Red Hat Hardened Images · Exact affected versions not specified by the source
Red Hat

Red Hat Insights proxy 1.5 · Exact affected versions not specified by the source
Red Hat

Red Hat Update Infrastructure 5 · Exact affected versions not specified by the source
Red Hat

SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · V3.1.6 to before *
Siemens

SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · V3.1.7 to before *
Siemens

SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · V3.1.6 to before *
Siemens

SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · V3.1.7 to before *
Siemens

SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · V3.1.6 to before *
Siemens

SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · V3.1.7 to before *
Siemens

Description’s affected range: version 2 in C

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

Attack conditions (Source advisory, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Vendor/CNA’s CVSS 3.1 assessment (base score 7.5/10) rates confidentiality and integrity impact as none; availability impact as high. Source advisory’s CVSS 3.1 assessment (base score 7.5/10) rates confidentiality and integrity impact as none; availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.