CVE-2026-19654

Rsyslog: a configuration-dependent issue in rsyslog's optional imptcp input module can allow an unauthenticated remote peer to crash rsyslogd

Published: Aug 12, 2026Updated: Sep 15, 2026 Sources: CVE List NVDCWE-125

7.5HIGH

Description

A unauthenticated remote peer may lead rsyslogd to crash due to a flaw in the optional imptcp module. A crafted input sequence during oversize-frame recovery can cause an invalid internal message length and terminate rsyslogd. No confidentiality or integrity impact, privilege escalation, or code execution has been identified. imtcp and the default imptcp framing modes are not affected.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:HAvailability

High

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Weaknesses

CWE-125

Affected Products

Red Hat

commercial·USaka redhat

Red Hat Enterprise Linux 10On-premOS

Operating Systems / linux-distro

Red Hat Enterprise Linux 10.0 Extended Update SupportOn-premOS

Operating Systems / linux-distro

rsyslog

oss-projectaka librelp, rsyslogd

rsyslogOn-prem

Enterprise Software / itsm-monitoring

and 5 more affected products View all →

Exploitability

Official Patch Available

Workaround Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Collection

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References

https://access.redhat.com/errata/RHSA-2026:66405

access.redhat.com

https://access.redhat.com/errata/RHSA-2026:67583

access.redhat.com

https://access.redhat.com/errata/RHSA-2026:67584

access.redhat.com

and 3 more references View all →

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