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.
Published: 2026-08-12
Score: 6 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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History

Wed, 12 Aug 2026 20:15:00 +0000

Type Values Removed Values Added
References

Wed, 12 Aug 2026 19:45:00 +0000

Type Values Removed Values Added
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.
Title Out-of-bounds read in the Base64 decoder in Amazon aws-sdk-cpp on signed-char platforms
First Time appeared Aws
Aws aws-sdk-cpp
Weaknesses CWE-125
CPEs cpe:2.3:a:aws:aws-sdk-cpp:*:*:*:*:*:*:*:*
Vendors & Products Aws
Aws aws-sdk-cpp
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 6, 'vector': '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'}

Subscriptions

Aws Aws-sdk-cpp
cve-icon MITRE

Status: PUBLISHED

Assigner: AMZN

Published:

Updated: 2026-08-12T19:46:45.274Z

Reserved: 2026-08-12T16:52:29.486Z

Link: CVE-2026-19643

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-08-12T20:17:42.800

Modified: 2026-08-12T20:50:27.407

Link: CVE-2026-19643

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses