CVE-2025-14762 is a medium-severity vulnerability in the AWS SDK for Ruby involving the use of a broken or risky cryptographic algorithm. The issue arises from missing cryptographic key commitment when encrypted data keys (EDKs) are stored in an "instruction file" rather than S3 metadata. This flaw allows a user with write access to an S3 bucket to introduce a malicious EDK that decrypts to different plaintext, potentially compromising data integrity. Exploitation requires network access, low privileges, and no user interaction, but has a high impact on integrity without affecting confidentiality or availability. AWS has addressed this vulnerability in SDK version 1.208.0 and later. European organizations using the AWS SDK for Ruby, especially those heavily reliant on S3 for encrypted data storage, should prioritize upgrading to mitigate risks. Countries with significant cloud adoption and AWS usage, such as Germany, the UK, France, and the Netherlands, are most likely to be affected. The vulnerability does not appear to be exploited in the wild yet, but the risk of data tampering warrants prompt remediation.
