CVE-2026-19654 (GCVE-0-2026-19654)

Vulnerability from cvelistv5 – Published: 2026-08-12 20:46 – Updated: 2026-11-05 14:27
VLAI
Title
Rsyslog: a configuration-dependent issue in rsyslog's optional imptcp input module can allow an unauthenticated remote peer to crash rsyslogd
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 12:58 UTC
CWE
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1212 records in the last 180 days details
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:66405 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:67583 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:67584 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:71603 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:80817 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:84571 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:84576 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:86124 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:87408 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:91582 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:95573 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-19654 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2502868 issue-trackingx_refsource_REDHAT
https://github.com/rsyslog/rsyslog/security/advis…
Impacted products
Vendor Product Version CPE status
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:8.2510.0-5.el10_2.1 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.2
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support Unaffected: 0:8.2412.0-1.el10_0.1 , < * (rpm)
    cpe:/o:redhat:enterprise_linux_eus:10.0
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:8.2102.0-15.el8_10.3 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:8.1911.0-7.el8_4.5 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.4::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:8.1911.0-7.el8_4.5 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.4::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:8.2102.0-7.el8_6.2 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.6::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:8.2102.0-7.el8_6.2 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.6::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:8.2102.0-13.el8_8.1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:8.8::appstream
    cpe:/a:redhat:rhel_tus:8.8::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:8.2102.0-13.el8_8.1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:8.8::appstream
    cpe:/a:redhat:rhel_tus:8.8::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:8.2510.0-2.el9_8.1 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:8.2102.0-113.el9_2.3 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.2::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:8.2310.0-4.el9_4.1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.4::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:8.2412.0-1.el9_6.2 , < * (rpm)
    cpe:/a:redhat:rhel_eus:9.6::appstream
Create a notification for this product.
Red Hat Red Hat Update Infrastructure 5 Unaffected: 1790241900 , < * (rpm)
    cpe:/a:redhat:rhui:5::el9
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:rhel_els:6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:rhel_els:7
Create a notification for this product.
Date Public
2026-07-22 10:00
Show details on NVD website
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}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

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How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

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