{"id":"CVE-2025-14759","state":"PUBLISHED","title":"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 differe","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.\n\nTo mitigate this issue, upgrade Amazon S3 Encryption Client for .NET to version 3.2.0 or later.","publishedAt":"2025-12-17T20:07:39.969Z","updatedAt":"2025-12-17T21:05:55.069Z","severity":{"score":6,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","source":"AMZN"},"assigner":"AMZN","products":["AWS S3 Encryption Client for .NET"],"affected":[{"vendor":"AWS","product":"S3 Encryption Client for .NET","defaultStatus":"unaffected","versions":[{"version":"3.2.0","status":"unaffected"}]}],"references":["https://aws.amazon.com/security/security-bulletins/AWS-2025-032/","https://github.com/aws/amazon-s3-encryption-client-dotnet/security/advisories/GHSA-4v42-65r3-3gjx","https://github.com/aws/amazon-s3-encryption-client-dotnet/releases/tag/release_2025-12-17"],"weaknesses":["CWE-327"],"ingestedAt":"2026-10-29T20:08:31.050Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/14xxx/CVE-2025-14759.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-14759","state":"PUBLISHED","datePublished":"2025-12-17T20:07:39.969Z","dateUpdated":"2025-12-17T21:05:55.069Z","assignerShortName":"AMZN","assignerOrgId":"ff89ba41-3aa1-4d27-914a-91399e9639e5","dateReserved":"2025-12-16T00:24:26.089Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"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.\n\nTo mitigate this issue, upgrade Amazon S3 Encryption Client for .NET to version 3.2.0 or later."}],"affected":[{"vendor":"AWS","product":"S3 Encryption Client for .NET","defaultStatus":"unaffected","versions":[{"version":"3.2.0","status":"unaffected"}]}],"references":[{"url":"https://aws.amazon.com/security/security-bulletins/AWS-2025-032/","tags":["vendor-advisory"]},{"url":"https://github.com/aws/amazon-s3-encryption-client-dotnet/security/advisories/GHSA-4v42-65r3-3gjx","tags":["third-party-advisory"]},{"url":"https://github.com/aws/amazon-s3-encryption-client-dotnet/releases/tag/release_2025-12-17","tags":["patch"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]},{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-327","description":"CWE-327: Use of a Broken or Risky Cryptographic Algorithm","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"AMZN","orgId":"ff89ba41-3aa1-4d27-914a-91399e9639e5","dateUpdated":"2025-12-17T21:05:55.069Z"},"impacts":[{"capecId":"CAPEC-148","descriptions":[{"lang":"en","value":"CAPEC-148: Content Spoofing"}]}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 0.5.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-12-17T20:36:38.163276Z","id":"CVE-2025-14759","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-12-17T20:41:44.243Z"}}]}}}