CVE-2026-19654
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Rsyslog
PublishedAug 12, 2026
First seenAug 12, 2026
Weakness typeCWE-125Out-of-bounds read
How to fix
Update
- rsyslog rsyslog8.2608.0 or later
Vendor advisories
- github.com/rsyslog/rsyslog/security/advisories/GHSA-cj5r-wh2m-7w29
- access.redhat.com/errata/RHSA-2026:66405
- access.redhat.com/errata/RHSA-2026:67583
- access.redhat.com/errata/RHSA-2026:67584
- access.redhat.com/errata/RHSA-2026:71603
- access.redhat.com/errata/RHSA-2026:80817
- access.redhat.com/errata/RHSA-2026:84571
- access.redhat.com/errata/RHSA-2026:84576
- access.redhat.com/errata/RHSA-2026:86124
- access.redhat.com/errata/RHSA-2026:87408
- access.redhat.com/errata/RHSA-2026:91582
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| rsyslog rsyslog | 8.36.0 ≤ v < 8.2608.0 | 8.2608.0 |
| redhat enterprise_linux | 6.0, 7.0, 8.0, 9.0, 10.0 | — |
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