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TI-2026-15960 Aliases CVE-2026-19654

Out-of-bounds read in Red Hat Enterprise Linux 10

Priority MEDIUM 40CWE-125Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-125 and the CVSS impact.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00772 55th percentileScored 2026-11-07
Fix Fixed Red Hat: 11 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Red HatRed Hat Enterprise Linux 10—8.2510.0-5.el10_2.1Patch availableCNA
Red HatRed Hat Enterprise Linux 10.0 Extended Update Support—8.2412.0-1.el10_0.1Patch availableCNA
Red HatRed Hat Enterprise Linux 8—8.2102.0-15.el8_10.3Patch availableCNA
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support—8.1911.0-7.el8_4.5Patch availableCNA
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On—8.1911.0-7.el8_4.5Patch availableCNA
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support—8.2102.0-7.el8_6.2Patch availableCNA
Red HatRed Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On—8.2102.0-7.el8_6.2Patch availableCNA
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service—8.2102.0-13.el8_8.1Patch availableCNA
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions—8.2102.0-13.el8_8.1Patch availableCNA
Red HatRed Hat Enterprise Linux 9—8.2510.0-2.el9_8.1Patch availableCNA
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions—8.2102.0-113.el9_2.3Patch availableCNA
Red HatRed Hat Enterprise Linux 9.4 Update Services for SAP Solutions—8.2310.0-4.el9_4.1Patch availableCNA
Red HatRed Hat Enterprise Linux 9.6 Extended Update Support—8.2412.0-1.el9_6.2Patch availableCNA
Red HatRed Hat Update Infrastructure 5—1790241900Patch availableCNA
Red HatRed Hat Enterprise Linux 6——Not affectedCNA
Red HatRed Hat Enterprise Linux 6——Not affectedCNA
Red HatRed Hat Enterprise Linux 7——Not affectedCNA
  • Red Hat Enterprise Linux 10 VendorRed Hat Affected — Fixed in 8.2510.0-5.el10_2.1 Patch available CNA
  • Red Hat Enterprise Linux 10.0 Extended Update Support VendorRed Hat Affected — Fixed in 8.2412.0-1.el10_0.1 Patch available CNA
  • Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in 8.2102.0-15.el8_10.3 Patch available CNA
  • Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support VendorRed Hat Affected — Fixed in 8.1911.0-7.el8_4.5 Patch available CNA
  • Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On VendorRed Hat Affected — Fixed in 8.1911.0-7.el8_4.5 Patch available CNA
  • Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support VendorRed Hat Affected — Fixed in 8.2102.0-7.el8_6.2 Patch available CNA
  • Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On VendorRed Hat Affected — Fixed in 8.2102.0-7.el8_6.2 Patch available CNA
  • Red Hat Enterprise Linux 8.8 Telecommunications Update Service VendorRed Hat Affected — Fixed in 8.2102.0-13.el8_8.1 Patch available CNA
  • Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions VendorRed Hat Affected — Fixed in 8.2102.0-13.el8_8.1 Patch available CNA
  • Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 8.2510.0-2.el9_8.1 Patch available CNA
  • Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions VendorRed Hat Affected — Fixed in 8.2102.0-113.el9_2.3 Patch available CNA
  • Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions VendorRed Hat Affected — Fixed in 8.2310.0-4.el9_4.1 Patch available CNA
  • Red Hat Enterprise Linux 9.6 Extended Update Support VendorRed Hat Affected — Fixed in 8.2412.0-1.el9_6.2 Patch available CNA
  • Red Hat Update Infrastructure 5 VendorRed Hat Affected — Fixed in 1790241900 Patch available CNA
  • Red Hat Enterprise Linux 6 VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat Enterprise Linux 6 VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat Enterprise Linux 7 VendorRed Hat Affected — Fixed in — Not affected CNA

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:a:rsyslog:rsyslog:*:*:*:*:*:*:*:*8.36.0 to before 8.2608.0Vulnerablersyslog
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*8.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*9.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*10.0VulnerableRed Hat
  • cpe:2.3:a:rsyslog:rsyslog:*:*:*:*:*:*:*:* Versions 8.36.0 to before 8.2608.0 Vulnerable ·rsyslog
  • cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Red Hat

Remediation

Red Hat 11 advisories

  • RHSA-2026:95573 Released 2026-11-05 · Red Hat rating Important
    rsyslog security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.4) rsyslog-8.1911.0-7.el8_4.5, rsyslog-crypto-8.1911.0-7.el8_4.5, rsyslog-elasticsearch-8.1911.0-7.el8_4.5 +14
    • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) rsyslog-8.1911.0-7.el8_4.5, rsyslog-crypto-8.1911.0-7.el8_4.5, rsyslog-elasticsearch-8.1911.0-7.el8_4.5 +14
  • RHSA-2026:91582 Released 2026-10-28 · Red Hat rating Important
    rsyslog security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.6) rsyslog-8.2102.0-7.el8_6.2, rsyslog-crypto-8.2102.0-7.el8_6.2, rsyslog-elasticsearch-8.2102.0-7.el8_6.2 +16
    • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) rsyslog-8.2102.0-7.el8_6.2, rsyslog-crypto-8.2102.0-7.el8_6.2, rsyslog-elasticsearch-8.2102.0-7.el8_6.2 +16
  • RHSA-2026:87408 Released 2026-10-21 · Red Hat rating Important
    rsyslog security update
    • Red Hat Enterprise Linux AppStream E4S (v.8.8) rsyslog-8.2102.0-13.el8_8.1, rsyslog-crypto-8.2102.0-13.el8_8.1, rsyslog-elasticsearch-8.2102.0-13.el8_8.1 +16
    • Red Hat Enterprise Linux AppStream TUS (v.8.8) rsyslog-8.2102.0-13.el8_8.1, rsyslog-crypto-8.2102.0-13.el8_8.1, rsyslog-elasticsearch-8.2102.0-13.el8_8.1 +16
Show 8 more Red Hat advisories
  • RHSA-2026:86124 Released 2026-10-20 · Red Hat rating Important
    rsyslog security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) rsyslog-8.2102.0-113.el9_2.3, rsyslog-crypto-8.2102.0-113.el9_2.3, rsyslog-elasticsearch-8.2102.0-113.el9_2.3 +17
  • RHSA-2026:84571 Released 2026-10-19 · Red Hat rating Important
    rsyslog security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.4) rsyslog-8.2310.0-4.el9_4.1, rsyslog-crypto-8.2310.0-4.el9_4.1, rsyslog-elasticsearch-8.2310.0-4.el9_4.1 +4
  • RHSA-2026:84576 Released 2026-10-19 · Red Hat rating Important
    rsyslog security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) rsyslog-8.2412.0-1.el9_6.2, rsyslog-crypto-8.2412.0-1.el9_6.2, rsyslog-elasticsearch-8.2412.0-1.el9_6.2 +17
  • RHSA-2026:80817 Released 2026-10-12 · Red Hat rating Important
    rsyslog security update
    • Red Hat Enterprise Linux AppStream (v. 8) rsyslog-8.2102.0-15.el8_10.3, rsyslog-doc-8.2102.0-15.el8_10.3
  • RHSA-2026:71603 Released 2026-09-24 · Red Hat rating Important
    Red Hat Update Infrastructure 5.3 security update
    • Red Hat Update Infrastructure 5 registry.redhat.io/rhui5/cds-kubernetes-rhel9, registry.redhat.io/rhui5/cds-rhel9, registry.redhat.io/rhui5/haproxy-rhel9 +2
  • RHSA-2026:67583 Released 2026-09-15 · Red Hat rating Low
    rsyslog security update
    • Red Hat Enterprise Linux AppStream (v. 9) rsyslog-8.2510.0-2.el9_8.1, rsyslog-crypto-8.2510.0-2.el9_8.1, rsyslog-doc-8.2510.0-2.el9_8.1 +18
  • RHSA-2026:67584 Released 2026-09-15 · Red Hat rating Moderate
    rsyslog security update
    • Red Hat Enterprise Linux AppStream (v. 10) rsyslog-8.2510.0-5.el10_2.1, rsyslog-crypto-8.2510.0-5.el10_2.1, rsyslog-doc-8.2510.0-5.el10_2.1 +17
  • RHSA-2026:66405 Released 2026-09-10 · Red Hat rating Important
    rsyslog security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) rsyslog-8.2412.0-1.el10_0.1, rsyslog-crypto-8.2412.0-1.el10_0.1, rsyslog-doc-8.2412.0-1.el10_0.1 +17

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:67584
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2026:80817
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:67583
Red Hat Enterprise Linux AppStream AUS (v.8.4)Fixed RHSA-2026:95573
Red Hat Enterprise Linux AppStream AUS (v.8.6)Fixed RHSA-2026:91582
Red Hat Enterprise Linux AppStream E4S (v.8.8)Fixed RHSA-2026:87408
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2026:86124
Red Hat Enterprise Linux AppStream E4S (v.9.4)Fixed RHSA-2026:84571
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:66405
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:84576
Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)Fixed RHSA-2026:95573
Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)Fixed RHSA-2026:91582
Red Hat Enterprise Linux AppStream TUS (v.8.8)Fixed RHSA-2026:87408
Red Hat Update Infrastructure 5Fixed RHSA-2026:71603
Not affected: 13 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux AppStream (v. 8)
  • Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • Red Hat Enterprise Linux AppStream E4S (v.9.4)
  • Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • Red Hat Update Infrastructure 5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-19654
  2. 2026-10-12 Fix available: rsyslog@0:8.2102.0-15.el8_10.3 · CNA
  3. 2026-10-12 1 new reference · CNA
  4. 2026-10-13 Fix available: RHSA-2026:80817 · Red Hat
  5. 2026-10-13 Fix available: Red Hat Enterprise Linux AppStream (v. 8) · Red Hat
  6. 2026-10-19 Fix available: rsyslog@0:8.2412.0-1.el9_6.2 · CNA
  7. 2026-10-19 1 new reference · CNA
  8. 2026-10-19 Fix available: RHSA-2026:84576 · Red Hat
  9. 2026-10-19 Fix available: Red Hat Enterprise Linux AppStream EUS (v.9.6) · Red Hat
  10. 2026-10-19 Fix available: rsyslog@0:8.2310.0-4.el9_4.1 · CNA
  11. 2026-10-19 1 new reference · CNA
  12. 2026-10-19 Fix available: RHSA-2026:84571 · Red Hat
  13. 2026-10-19 Priority changed: LOW → MEDIUM
  14. 2026-10-20 Fix available: Red Hat Enterprise Linux AppStream E4S (v.9.4) · Red Hat
  15. 2026-10-21 Fix available: rsyslog@0:8.2102.0-113.el9_2.3 · CNA
  16. 2026-10-21 1 new reference · CNA
  17. 2026-10-21 Fix available: RHSA-2026:86124 · Red Hat
  18. 2026-10-21 Fix available: Red Hat Enterprise Linux AppStream E4S (v.9.2) · Red Hat
  19. 2026-10-21 Fix available: rsyslog@0:8.2102.0-13.el8_8.1 · CNA
  20. 2026-10-21 1 new reference · CNA
  21. 2026-10-22 Fix available: RHSA-2026:87408 · Red Hat
  22. 2026-10-22 Fix available: Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream TUS (v.8.8) · Red Hat
  23. 2026-10-30 Fix available: rsyslog@0:8.2102.0-7.el8_6.2 · CNA
  24. 2026-10-30 1 new reference · CNA
  25. 2026-10-30 Fix available: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) · Red Hat
  26. 2026-11-02 EPSS moved to the 50th–90th percentile
  27. 2026-11-05 Fix available: rsyslog@0:8.1911.0-7.el8_4.5 · CNA
  28. 2026-11-05 1 new reference · CNA
  29. 2026-11-05 Fix available: Red Hat Enterprise Linux AppStream AUS (v.8.4), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) · Red Hat
  30. 2026-11-06 Fix available: RHSA-2026:91582 · Red Hat
  31. 2026-11-06 Fix available: RHSA-2026:95573 · Red Hat

References

Advisory 14

  • TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-10530 Code injection in [UNKNOWN] RichFaces KEVCVSS 3.1CRITICAL 9.8
  • TI-2014-05975 GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed… KEVCVSS 3.1CRITICAL 9.8
  • TI-2014-05157 GNU Bash through 4.3 processes trailing strings after function definitions in the values… KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-23530 Sudo before 1.9.17p1 allows local users to obtain root access because /etc/nsswitch.conf… KEVCVSS 3.1CRITICAL 9.3
  • TI-2021-17490 mod_proxy SSRF KEVCVSS 3.1CRITICAL 9.0
See all 1955 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences