VULNERABILITY INTELLIGENCE
CVE-2026-12043
CVSS score8.8 HIGH
EPSS probability0.35%
CISA KEVNot currently listed
Published2026-06-12
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Description
Improper handling of HPACK dynamic table size updates in the AWS Common Runtime aws-c-http library might allow a remote threat actor operating a server to cause memory corruption on a connecting client application, potentially leading to arbitrary code execution, via a crafted sequence of HTTP/2 HEADERS frames. To remediate this issue, users should upgrade to aws-c-http version 0.11.0.
Weakness classification
- ff89ba41-3aa1-4d27-914a-91399e9639e5: CWE-415