# CVE-2025-14759

> CVE-2025-14759. CVSS 5.3 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2025-14759
Last updated: 2026-06-17T08:36:31Z

- Published: 2025-12-17 20:07 UTC · Updated: 2026-06-17 08:36 UTC · Assigner: AMZN
- CVSS: 5.3 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
- EPSS: 0.11%, 1th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-327

## Description

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.

## Affected vendors and products

- AWS: S3 Encryption Client for .NET

## Tracked companies

- [Amazon Web Services](https://rewindex.com/company/aws.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-14759)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-14759)
- [https://aws.amazon.com/security/security-bulletins/AWS-2025-032/](https://aws.amazon.com/security/security-bulletins/AWS-2025-032/)
- [https://github.com/aws/amazon-s3-encryption-client-dotnet/releases/tag/release\_2025-12-17](https://github.com/aws/amazon-s3-encryption-client-dotnet/releases/tag/release_2025-12-17)
- [https://github.com/aws/amazon-s3-encryption-client-dotnet/security/advisories/GHSA-4v42-65r3-3gjx](https://github.com/aws/amazon-s3-encryption-client-dotnet/security/advisories/GHSA-4v42-65r3-3gjx)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2025-14759 · Markdown: https://rewindex.com/cve/CVE-2025-14759.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-14759 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:12:32.110Z