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OpenAdvisories
Medium · 5.3 CVE-2026-19643 EUVD-2026-57524

Out-of-bounds read in the Base64 decoder in Amazon aws-sdk-cpp on signed-char platforms

Published Aug 12, 2026 · Updated Aug 13, 2026 · Assigned by AMZN

Description

An out-of-bounds read issue in the Base64 decoder in Amazon aws-sdk-cpp before 1.11.862, on some platforms, might allow a remote authenticated user to crash an application that processes crafted Base64-encoded input.

To remediate this issue, users should upgrade to version 1.11.862.

Affected products

VendorProductAffectedFixed
AWS aws-sdk-cpp ≤ 1.11.861 —

References