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Vulnerabilities in RHEL 10 and Debian Linux Exposed

Vulnerabilities in RHEL 10 and Debian Linux Exposed

First seen 15 Oct 2026, 15:39 UTC • •

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ThreatCluster AI
ThreatCluster •October 15, 2026 at 16:37 UTC
  • •RHEL 10 vulnerabilities include CVE-2026-91104 with a CVSS score of 9.3.
  • •Debian Linux has a newly disclosed medium severity vulnerability, CVE-2026-108978.
  • •No known exploits are currently available for either vulnerability.

Recent advisories have highlighted vulnerabilities affecting Red Hat Enterprise Linux (RHEL) 10 and Debian Linux distributions. RHEL 10 has multiple CVEs, including CVE-2026-91104 with a CVSS score of 9.3, published on 2026-09-16. The vulnerabilities could allow for significant impacts on confidentiality, integrity, and availability. Meanwhile, Debian Linux has reported CVE-2026-108978, a medium severity flaw published on 2026-10-11. Both advisories indicate that no known exploits are available at this time. System administrators are urged to apply patches promptly to mitigate potential risks. The vulnerabilities affect various components, including hplip and rlottie libraries. The patch for RHEL was published on 2026-10-14, while the Debian vulnerability was disclosed just days prior.

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Timeline

2025-07-28
CVE-2025-43023 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-09-16
Multiple CVEs published for RHEL 10
Critical vulnerabilities including CVE-2026-91104 (CVSS 9.3) were disclosed, affecting hplip and other components.
Tenable
2026-09-16
CVE-2026-91100 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-09-16
CVE-2026-91105 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-09-16
CVE-2026-91098 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-09-16
CVE-2026-91099 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-09-16
CVE-2026-91097 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-09-16
CVE-2026-91104 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-09-16
CVE-2026-91101 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-09-16
CVE-2026-91103 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE

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Common questions

Which versions of RHEL are affected?
RHEL 10.2 is specifically mentioned as affected by the vulnerabilities.
What is the severity of CVE-2026-91104?
CVE-2026-91104 has a CVSS score of 9.3, indicating a critical vulnerability.
When should I apply the patches?
Patches for RHEL 10 should be applied immediately to mitigate the critical vulnerabilities.