VeraCrypt up to 1.26.28 wolfCrypt src/Crypto/wolfCrypt.c derive_key_sha256/derive_key_sha512 risky encryption

Summaryinfo

A vulnerability described as problematic has been identified in VeraCrypt up to 1.26.28. This affects the function derive_key_sha256/derive_key_sha512 of the file src/Crypto/wolfCrypt.c of the component wolfCrypt. The manipulation results in risky encryption. This vulnerability is reported as CVE-2026-53762. The attack requires a local approach. No exploit exists.

Detailsinfo

A vulnerability classified as problematic has been found in VeraCrypt up to 1.26.28. Affected is the function derive_key_sha256/derive_key_sha512 of the file src/Crypto/wolfCrypt.c of the component wolfCrypt. The manipulation with an unknown input leads to a risky encryption vulnerability. CWE is classifying the issue as CWE-327. The product uses a broken or risky cryptographic algorithm or protocol. This is going to have an impact on confidentiality. CVE summarizes:

VeraCrypt provides disk encryption with strong security based on TrueCrypt. Prior to 1.26.29, non-default builds created with WOLFCRYPT=1 and WOLFCRYPT_BACKEND route SHA-256 and SHA-512 volume-header key derivation through derive_key_sha256 and derive_key_sha512 in src/Crypto/wolfCrypt.c, where the configured iterations value is discarded and wc_HKDF is used instead of PBKDF2-HMAC. Changing the PIM or iteration count therefore does not increase derivation cost, allowing an attacker with an affected container, disk image, or volume header to perform substantially cheaper offline password guesses. Official precompiled VeraCrypt binaries and normal distribution packages use the standard PBKDF2 backend and are not affected. Volumes created by an affected WOLFCRYPT=1 build require backup and recreation because corrected builds derive different keys. This issue is fixed in version 1.26.29.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-53762 since 06/10/2026. The exploitability is told to be difficult. Local access is required to approach this attack. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1600 by the MITRE ATT&CK project.

Upgrading to version 1.26.29 eliminates this vulnerability.

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Productinfo

Name

• VeraCrypt

Version

• 1.26.0
• 1.26.1
• 1.26.2
• 1.26.3
• 1.26.4
• 1.26.5
• 1.26.6
• 1.26.7
• 1.26.8
• 1.26.9
• 1.26.10
• 1.26.11
• 1.26.12
• 1.26.13
• 1.26.14
• 1.26.15
• 1.26.16
• 1.26.17
• 1.26.18
• 1.26.19
• 1.26.20
• 1.26.21
• 1.26.22
• 1.26.23
• 1.26.24
• 1.26.25
• 1.26.26
• 1.26.27
• 1.26.28

Website

• Product: https://github.com/veracrypt/VeraCrypt/

CPE 2.3info

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