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CVE search · CVE-2026-42009

CVE-2026-42009

high 7.5

A flaw was found in gnutls. A remote attacker could exploit an issue in the Datagram Transport Layer Security (DTLS) packet reordering logic. The comparator function, responsible for ordering DTLS packets by sequence numbers, did not correctly handle packets with duplicate sequence numbers. This could lead to unstable packet ordering or undefined behavior, resulting in a denial of service.

Open in the NVD CVE.org JSON

Details

Status
Modified
Published
Last changed
Source
secalert@redhat.com
Weakness
CWE-475

Severity

VersionScoreVectorSource
CVSS 3.1 high 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H secalert@redhat.comSecondary
CVSS 3.1 high 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 0b0ca135-0b70-47e7-9f44-1890c2a1c46cSecondary

Affected products

Vendor and product from the NVD’s CPE applicability statements. Versions and conditions are on the NVD’s page.

  • gnu · gnutls
  • redhat · hardened_images
  • redhat · openshift_container_platform
  • redhat · enterprise_linux
  • redhat · enterprise_linux_for_els
  • redhat · enterprise_linux_for_ibm_z_systems
  • redhat · enterprise_linux_for_ibm_z_systems_els
  • redhat · enterprise_linux_for_power_little_endian
  • redhat · enterprise_linux_for_power_little_endian_els
  • redhat · enterprise_linux_for_eus
  • redhat · enterprise_linux_for_ibm_z_systems_eus
  • redhat · enterprise_linux_for_power_little_endian_eus
  • redhat · enterprise_linux_for_update_services_for_sap_solutions
  • redhat · enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions

References