Stored-data manipulation via uncommitted instruction-file key
Published Dec 17, 2025 · Updated Dec 17, 2025
Cryptographic key substitution in AWS S3 Encryption Client for Go 3.1.0 and earlier allows remote authenticated users to alter plaintext. When instruction files hold encrypted data keys, the client accepts a replacement key without cryptographically binding it to the ciphertext. Exploitation requires permission to replace the bucket's instruction file and a rogue key that decrypts the existing ciphertext into attacker-chosen plaintext.
Summary
What happened
Cryptographic key substitution in AWS S3 Encryption Client for Go 3.1.0 and earlier allows remote authenticated users to alter plaintext. When instruction files hold encrypted data keys, the client accepts a replacement key without cryptographically binding it to the ciphertext. Exploitation requires permission to replace the bucket's instruction file and a rogue key that decrypts the existing ciphertext into attacker-chosen plaintext.
The record
- CVE
- CVE-2025-14764
- Published
- Dec 17, 2025
- Updated
- Dec 17, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-327, CAPEC-148, T1565.001
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 17, 2025CVE publishedPublication date reported by the CVE source.
- Dec 17, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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