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CVE-2026-53762— VeraCryp: wolfCrypt backend bypasses VeraCrypt PBKDF2 iteration count (non-default WOLFCRYPT=1 builds)

Quick assessment

Affected
veracrypt VeraCrypt
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

VeraCrypt 基于 TrueCrypt 提供了具有强安全性的磁盘加密功能。在 1.26.29 版本之前，使用 WOLFCRYPT=1 和 WOLFCRYPT_BACKEND 选项构建的非默认版本中，SHA-256 和 SHA-512 卷头密钥派生过程会通过 src/Crypto/wolfCrypt.c 中的 derive_key_sha256 和 derive_key_sha512 函数进行，但在此过程中配置的迭代次数被丢弃，改用 wc_HKDF 替代 PBKDF2-HMAC。因此，更改 PIM（个人迭代乘数

CVSS 6.2 · Medium EPSS 0.06% · P0

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
veracrypt VeraCrypt < 1.26.29 affected
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I. Basic Information for CVE-2026-53762

Vulnerability Information
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Vulnerability Title
VeraCryp: wolfCrypt backend bypasses VeraCrypt PBKDF2 iteration count (non-default WOLFCRYPT=1 builds)
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用具有不充分计算复杂性的口令哈希
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
veracrypt VeraCrypt < 1.26.29 -

II. Public POCs for CVE-2026-53762

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III. Intelligence Information for CVE-2026-53762

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Patches & Fixes for CVE-2026-53762 (1)

Vendor Advisories for CVE-2026-53762 (1)

Vendor Pages for CVE-2026-53762 (1)

IV. Related Vulnerabilities

Same product: VeraCrypt
Same vendor: veracrypt
Same weakness: CWE-916

V. Comments for CVE-2026-53762

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