CVE-2026-19654
HIGH severity · CVSS 7.5 · Out-of-bounds read
7.5CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)1%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://access.redhat.com/errata/RHSA-2026:66405
- https://access.redhat.com/errata/RHSA-2026:67583
- https://access.redhat.com/errata/RHSA-2026:67584
- https://access.redhat.com/errata/RHSA-2026:71603
- https://access.redhat.com/errata/RHSA-2026:80817
- https://access.redhat.com/errata/RHSA-2026:84571
- https://access.redhat.com/errata/RHSA-2026:84576
- https://access.redhat.com/errata/RHSA-2026:86124