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CVE-2026-19643

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

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Amazon ≫ Aws Software Development Kit SwPlatformc++ Version < 1.11.862
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.34% 0.27
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
ff89ba41-3aa1-4d27-914a-91399e9639e5 6 0 0
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
ff89ba41-3aa1-4d27-914a-91399e9639e5 5.3 1.6 3.6
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-125 Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

https://github.com/aws/aws-sdk-cpp/releases/tag/1.11.862
Release Notes
https://aws.amazon.com/security/security-bulletins/2026-080-aws/
Vendor Advisory
https://github.com/aws/aws-sdk-cpp/security/advisories/GHSA-mxm9-xpf9-x66x
Vendor Advisory