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CVE-2026-19654

high

A unauthenticated remote peer may lead rsyslogd to crash due to a flaw in the optional imptcp module.

Vendor / product: Rsyslog — rsyslog

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
7.5
7.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity source: NVD CVSS v3.1 (secalert@redhat.com)
Timeline (UTC)
Published: 2026-08-12 21:17
Modified: 2026-10-30 18:17
NVD status: Modified
Last synced 19 hours ago
Verified against the source API 2026-10-30 18:18 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

rsyslog / rsyslog ≥8.36.0 <8.2608.0
redhat / enterprise_linux 6.0, 7.0, 8.0, 9.0, 10.0

Weakness classification (CWE)

CWE-125

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Vendor advisory: https://github.com/rsyslog/rsyslog/security/advisories/GHSA-cj5r-wh2m-7w29

References

Data sources

NVD CVE API 2.0 — fetched 2026-10-30 18:18 UTC · record ↗

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