Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Rsyslog | Rsyslog | >= 8.36.0, < 8.2608.0 |
| Redhat | Enterprise Linux | 6.0 |
Related Weaknesses (CWE)
References
- 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/security/cve/CVE-2026-19654Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2502868Issue TrackingThird Party Advisory
- https://github.com/rsyslog/rsyslog/security/advisories/GHSA-cj5r-wh2m-7w29Vendor Advisory
FAQ
What is CVE-2026-19654?
CVE-2026-19654 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 leng...
How severe is CVE-2026-19654?
CVE-2026-19654 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-19654?
Check the references section above for vendor advisories and patch information. Affected products include: Rsyslog Rsyslog, Redhat Enterprise Linux.