CVE-2026-42009High· 7.5▾ TwilightA 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 cor…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.3 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Jul 30.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
1.3%
Last analysed / modified upstream
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.
gnutlshardened_imagesopenshift_container_platform = 4.0enterprise_linux = 6.0enterprise_linux = 7.0enterprise_linux = 8.0enterprise_linux_for_els = 8.10enterprise_linux_for_ibm_z_systems = 8.0_s390xenterprise_linux_for_ibm_z_systems_els = 8.10enterprise_linux_for_power_little_endian = 8.0_ppc64leenterprise_linux_for_power_little_endian_els = 8.10enterprise_linux = 9.0enterprise_linux = 9.8enterprise_linux_for_els = 9.8enterprise_linux_for_eus = 9.8enterprise_linux_for_ibm_z_systems = 9.0_s390xenterprise_linux_for_ibm_z_systems_els = 9.8enterprise_linux_for_ibm_z_systems_eus = 9.8enterprise_linux_for_power_little_endian = 9.0_ppc64leenterprise_linux_for_power_little_endian_els = 9.8enterprise_linux_for_power_little_endian_eus = 9.8enterprise_linux_for_update_services_for_sap_solutions = 9.8enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions = 9.8enterprise_linux = 10.0enterprise_linux = 10.2enterprise_linux_for_els = 10.2enterprise_linux_for_eus = 10.2enterprise_linux_for_ibm_z_systems = 10.2enterprise_linux_for_ibm_z_systems_els = 10.2enterprise_linux_for_ibm_z_systems_eus = 10.2enterprise_linux_for_power_little_endian = 10.0enterprise_linux_for_power_little_endian = 10.2enterprise_linux_for_power_little_endian_els = 10.2enterprise_linux_for_power_little_endian_eus = 10.2Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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