CVE-2026-19654: Red Hat Enterprise Linux 10 · Out-of-bounds Read
Affects Red Hat Enterprise Linux 10Source CVE Database V5
Not known to be exploited · CVSS 7.5 High.
Data as of 11 Nov 2026, 11:44 UTC
Thin evidence
One scorer or none| CNA (redhat) | CVSS 3.1 | 7.5 |
|---|
- EPSS
- 0.7% chance of exploitation in 30 days – higher than 55% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 12 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10rsyslog | Affected– | Fixed in– |
| Red Hat Enterprise Linux 10.0 Extended Update Supportrsyslog | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8rsyslog | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Supportrsyslog | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-Onrsyslog | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Supportrsyslog | Affected– | Fixed in– |
AI-suggested
Red Hat recommends the following mitigations for users relying on the imptcp module: (1) Remove the framing.delimiter.regex setting from the affected configuration; (2) Disable the affected imptcp listener or unload the imptcp module if it is not required; (3) Restrict network access to the imptcp listener to trusted senders only. These mitigations reduce the risk of exploitation in the absence of an official patch.
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.
References
- access.redhat.com/security/cve/CVE-2026-19654 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2502868 (opens in a new tab)
- github.com/rsyslog/rsyslog/security/advisories/GHSA-cj5r-wh2m-7w29 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:66405 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:67583 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:67584 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:71603 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:80817 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:84576 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:84571 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:86124 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:87408 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:91582 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:95573 (opens in a new tab)