PT-2026-82616 · Unknown · Openssl-Encrypt
CVE-2026-81721
·
Published
2026-08-27
·
Updated
2026-08-31
CVSS v4.0
8.7
High
| Vector | AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
Name of the Vulnerable Software and Affected Versions
openssl encrypt versions prior to 1.4.9
Description
The software fails to validate Key Derivation Function (KDF) cost parameters within encrypted file metadata and keystore headers. This allows an unauthenticated attacker to trigger unbounded memory allocation by crafting malicious encrypted files that declare arbitrarily large parameters for Argon2, scrypt, or balloon KDFs, leading to system memory exhaustion and process crashes.
Recommendations
Update to version 1.4.9 or later.
Exploit
Fix
DoS
Resource Exhaustion
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Weakness Enumeration
Related Identifiers
Affected Products
Openssl-Encrypt