CVE-2026-19654: Red Hat Enterprise Linux 10 · Out-of-bounds Read
Affects Red Hat Enterprise Linux 10Source GCVE Database
Not known to be exploited · CVSS 7.5 High.
Data as of 26 Oct 2026, 09:16 UTC
- EPSS
- 0.5% chance of exploitation in 30 days – higher than 46% 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
Weaponised: 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 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Red Hatredhat/rsyslogpkg:rpm/redhat/rsyslogOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Red Hat has released updated rsyslog packages that fix this vulnerability. Users of Red Hat Enterprise Linux 10.0 Extended Update Support should apply the security update as described in Red Hat advisory RHSA-2026:66405 and the referenced article https://access.redhat.com/articles/11258. Applying this official update fully mitigates the vulnerability.
Description
CVE-2026-19654 is a configuration-dependent vulnerability in the optional imptcp input module of rsyslog on Red Hat Enterprise Linux 10.0 Extended Update Support. It allows an unauthenticated remote peer to cause a crash of the rsyslog daemon (rsyslogd). Red Hat has issued an important security advisory and released an update to address this issue.
References
- access.redhat.com/errata/RHSA-2026:66405 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2502868 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_66405.json (opens in a new tab)
- msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-19654.json (opens in a new tab)
- support.microsoft.com/lifecycle (opens in a new tab)
- first.org/cvss (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:67584 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_67584.json (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:80817 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2521135 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_80817.json (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:67583 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:71603 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:84571 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:84576 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:86124 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-19654 (opens in a new tab)
- github.com/rsyslog/rsyslog/security/advisories/GHSA-cj5r-wh2m-7w29 (opens in a new tab)