What is RHSA-2026:84571?

RHSA-2026:84571 is a security advisory published by Red Hat Product Security with High severity. Red Hat Security Advisory: rsyslog security update

Which CVE IDs does RHSA-2026:84571 cover?

RHSA-2026:84571 covers the following CVE IDs: CVE-2026-19654. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2026:84571?

RHSA-2026:84571 has a CVSS v3 base score of 7.5, published by Red Hat Product Security.

Which products are affected by RHSA-2026:84571?

RHSA-2026:84571 affects 163 products, including: Red Hat Enterprise Linux AppStream E4S (v.9.4); rsyslog-0:8.2310.0-4.el9_4.1.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4); rsyslog-0:8.2310.0-4.el9_4.1.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4); rsyslog-0:8.2310.0-4.el9_4.1.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4); rsyslog-0:8.2310.0-4.el9_4.1.src as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4); and others — see the full list on the advisory page.

RHSA-2026:84571HighCVSS 7.5

Red Hat Security Advisory: rsyslog security update

Vendor

Red Hat Product Security

Published

October 19, 2026

Last Modified

October 19, 2026

🔗 CVE IDs covered (1)

CVE-2026-19654 →

📋 Description

CVE-2026-19654 — rsyslog: A configuration-dependent issue in rsyslog's optional imptcp input module can allow an unauthenticated remote peer to crash rsyslogd

🎯 Affected products163

Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-0:8.2310.0-4.el9_4.1.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-0:8.2310.0-4.el9_4.1.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-0:8.2310.0-4.el9_4.1.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-0:8.2310.0-4.el9_4.1.src as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-0:8.2310.0-4.el9_4.1.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-crypto-0:8.2310.0-4.el9_4.1.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-crypto-0:8.2310.0-4.el9_4.1.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-crypto-0:8.2310.0-4.el9_4.1.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-crypto-0:8.2310.0-4.el9_4.1.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-crypto-debuginfo-0:8.2310.0-4.el9_4.1.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-crypto-debuginfo-0:8.2310.0-4.el9_4.1.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-crypto-debuginfo-0:8.2310.0-4.el9_4.1.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-crypto-debuginfo-0:8.2310.0-4.el9_4.1.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-debuginfo-0:8.2310.0-4.el9_4.1.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-debuginfo-0:8.2310.0-4.el9_4.1.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-debuginfo-0:8.2310.0-4.el9_4.1.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-debuginfo-0:8.2310.0-4.el9_4.1.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-debugsource-0:8.2310.0-4.el9_4.1.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-debugsource-0:8.2310.0-4.el9_4.1.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-debugsource-0:8.2310.0-4.el9_4.1.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-debugsource-0:8.2310.0-4.el9_4.1.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-doc-0:8.2310.0-4.el9_4.1.noarch as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-elasticsearch-0:8.2310.0-4.el9_4.1.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-elasticsearch-0:8.2310.0-4.el9_4.1.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-elasticsearch-0:8.2310.0-4.el9_4.1.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-elasticsearch-0:8.2310.0-4.el9_4.1.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-elasticsearch-debuginfo-0:8.2310.0-4.el9_4.1.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-elasticsearch-debuginfo-0:8.2310.0-4.el9_4.1.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
rsyslog-elasticsearch-debuginfo-0:8.2310.0-4.el9_4.1.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.4)
+133 more not shown

✅ 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 Workaround: To mitigate this issue, users that are relying on the imptcp module can implement one of the following options: 1) Remove the framing.delimiter.regex from the affected 2) Disabled the affected `imptcp` listener or unload `imptcp` if it's not required 3) Restrict the network access to the listener to trusted senders only

🔗 CVE IDs covered (1)

📋 Description

🎯 Affected products163

✅ Remediation

🔗 References (4)