CVE-2026-5190

HIGH

AWS C Event Stream Streaming Decoder Stack Buffer Overflow

Title source: cna
STIX 2.1

Description

Out-of-bounds write in the streaming decoder component in aws-c-event-stream before 0.6.0 might allow a third party operating a server to cause memory corruption leading to arbitrary code execution on a client application that processes crafted event-stream messages. To remediate this issue, users should upgrade to version 0.6.0 or later.

References (3)

Scores

CVSS v3 7.5
EPSS 0.0002
EPSS Percentile 5.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-787
Status published
Products (1)
AWS/aws-c-event-stream 0.6.0
Published Mar 31, 2026
Tracked Since Mar 31, 2026