openssl_encrypt before 1.4.9 fails to validate KDF cost parameters in encrypted file metadata and keystore headers, allowing attackers to trigger unbounded memory allocation. Attackers can craft malicious encrypted files declaring arbitrarily large Argon2, scrypt, or balloon KDF parameters to exhaust system memory and crash the process without authentication.
Metrics
Affected Vendors & Products
References
History
Sat, 29 Aug 2026 18:30:00 +0000
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ssvc
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Thu, 27 Aug 2026 18:00:00 +0000
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| First Time appeared |
Jahlives
Jahlives openssl Encrypt |
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| Vendors & Products |
Jahlives
Jahlives openssl Encrypt |
Thu, 27 Aug 2026 16:45:00 +0000
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| Description | openssl_encrypt before 1.4.9 fails to validate KDF cost parameters in encrypted file metadata and keystore headers, allowing attackers to trigger unbounded memory allocation. Attackers can craft malicious encrypted files declaring arbitrarily large Argon2, scrypt, or balloon KDF parameters to exhaust system memory and crash the process without authentication. | |
| Title | openssl_encrypt before 1.4.9 Denial of Service via KDF | |
| Weaknesses | CWE-400 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-08-27T14:51:15.109Z
Updated: 2026-08-27T19:28:47.802Z
Reserved: 2026-08-27T11:13:14.063Z
Link: CVE-2026-81721
Updated: 2026-08-27T19:28:44.770Z
Status : Undergoing Analysis
Published: 2026-08-27T17:21:02.650
Modified: 2026-08-28T18:56:34.447
Link: CVE-2026-81721
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