CVE-2026-19642mediumCWE-787

CVE-2026-19642: medium-severity vulnerability in aws-sdk-cpp

Out-of-bounds write in the Base64 decoder in Amazon aws-sdk-cpp

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6epss 0.5%
An out-of-bounds write issue in the Base64 decoder in Amazon aws-sdk-cpp before 1.11.862 might allow a remote authenticated user to cause a crash or heap memory corruption in an application that processes crafted Base64-encoded input. To remediate this issue, users should upgrade to version 1.11.862.
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
Affected products
AWS · aws-sdk-cpp
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CVE-2026-19643MEDIUMOut-of-bounds read in the Base64 decoder in Amazon aws-sdk-cpp on signed-char platformsEPSS 0.6%