PT-2026-7242 · Unknown · Transport Layer Security 1.3

Published 2026-01-01 · Updated 2026-05-03 · CVE-2026-1584

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions (affected versions not specified)

Description A flaw exists related to pre-shared key (PSK) binder verification during Transport Layer Security (TLS) 1.3 resumption attempts. The issue is triggered when an invalid PSK binder value is present in the ClientHello message, potentially leading to a denial of service (DoS) condition.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2026-1584

OPENSUSE-SU-2026:10177-1

RHSA-2026:7477

Affected Products

Transport Layer Security 1.3

References · 21

• https://osv.dev/vulnerability/BELL-CVE-2026-1584 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-1584 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-1584 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-1584 · Security Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2435258 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-1584 · Security Note
• https://access.redhat.com/errata/RHSA-2026:7477 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10177-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-1584 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2026-1584 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-1584 · Vendor Advisory
• https://access.redhat.com/security/cve/CVE-2026-1584 · Vendor Advisory
• https://twitter.com/autumn_good_35/status/2021246256438284395 · Twitter Post
• https://twitter.com/transilienceai/status/2021064305500619256 · Twitter Post
• https://twitter.com/oss_security/status/2021058810958446787 · Twitter Post