CVE-2025-14759
MEDIUMAmazon S3 Encryption Client for .NET < 3.2.0 - Use of a Broken or Risky Cryptographic Algorithm
Title source: llmDescription
Missing cryptographic key commitment in the Amazon S3 Encryption Client for .NET may allow a user with write access to the S3 bucket to introduce a new EDK that decrypts to different plaintext when the encrypted data key is stored in an "instruction file" instead of S3's metadata record. To mitigate this issue, upgrade Amazon S3 Encryption Client for .NET to version 3.2.0 or later.
References (3)
Core 3
Core References
Various Sources vendor-advisory
https://aws.amazon.com/security/security-bulletins/AWS-2025-032/
Vendor Advisory third-party-advisory
https://github.com/aws/amazon-s3-encryption-client-dotnet/security/advisories/GHSA-4v42-65r3-3gjx
Scores
CVSS v3
5.3
EPSS
0.0009
EPSS Percentile
0.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-327
Status
published
Products (2)
AWS/S3 Encryption Client for .NET
3.2.0
nuget/Amazon.Extensions.S3.Encryption
0 - 3.2.0NuGet
Published
Dec 17, 2025
Tracked Since
Feb 18, 2026