CVE-2026-81704
openssl_encrypt versions before 1.4.9 contain a weak key derivation vulnerability in the D-Bus CryptoService.EncryptFile handler that uses unstretched SHA-256 instead of Argon2id. Attackers can perform offline password guessing against encrypted files roughly six to seven orders of magnitude faster than documented protection by exploiting the missing key stretching and hash rounds.
Scoring
- Severity
- HIGH
- CVSS base score
- 8.7
- CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- EPSS probability
- 0.20%
- CWE
- CWE-916
- Published
- 2026-08-27
- Last modified
- 2026-08-28
Affected products
- jahlives openssl_encrypt
- jahlives openssl_encrypt
Weakness type
Related vulnerabilities
- CVE-2026-90457 — The administrative password is hashed using a comparatively weak, fast algorithm for the credential...
- CVE-2026-86670 — aircheng-org iWebShop-5 Authentication Storage admin.php weak password hash
- CVE-2026-81689 — openssl_encrypt before 1.4.9 Weak Pepper Key Derivation
- CVE-2026-80211 — FrontAccounting through 2.4.20 Use of Unsalted MD5 for Password Storage
- CVE-2026-53762 — VeraCryp: wolfCrypt backend bypasses VeraCrypt PBKDF2 iteration count (non-default WOLFCRYPT=1 builds)
- CVE-2026-75112 — OTTO® Fleet Manager – Weak Password Hashing Configuration
- CVE-2026-74871 — openssl_encrypt before 1.4.6 KDF Bypass via Sequential-XOR
- CVE-2026-49005 — Root password hash exposure vulnerability in ZTE F689 product