CVE-2026-5264

CRITICAL

DTLS 1.3 ACK heap buffer overflow

Title source: cna
STIX 2.1

Description

Heap buffer overflow in DTLS 1.3 ACK message processing. A remote attacker can send a crafted DTLS 1.3 ACK message that triggers a heap buffer overflow.

Scores

CVSS v3 9.8
EPSS 0.0013
EPSS Percentile 31.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact total

Details

CWE
CWE-122
Status published
Products (2)
wolfSSL/wolfSSL < 5.9.1
wolfssl/wolfssl < 5.9.1
Published Apr 09, 2026
Tracked Since Apr 10, 2026