Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-54073— VeraCrypt: Hidden volume quick format weakens plausible deniability

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。从版本 1.26.6 到 1.26.29 期间，在创建基于文件的隐藏卷时，系统强制执行快速格式化。具体而言，src/Common/Format.c 中的 FormatNoFs 函数以及 src/Common/Fat.c 中的 FormatFat 函数使用 WriteFile 以可预测的 128 MiB 间隔写入原始全零扇区。这些写入操作绕过了正常的 EncryptDataUnits 格式化路径，导致在预期应呈现为随机密文数据的区域中留下

CVSS 4.6 · Medium EPSS 0.09% · P1

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 1

VendorProduct Version RangeStatus
veracrypt VeraCrypt >= 1.26.6, < 1.26.29 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-54073

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
VeraCrypt: Hidden volume quick format weakens plausible deniability
Source: CVE Program / CVE List V5
Vulnerability Description
VeraCrypt provides disk encryption with strong security based on TrueCrypt. From 1.26.6 until 1.26.29, file-hosted hidden volume creation forces quick format and the FormatNoFs function in src/Common/Format.c and FormatFat function in src/Common/Fat.c use WriteFile to place raw zeroed sectors at predictable 128 MiB intervals. These writes bypass the normal EncryptDataUnits formatting path, leaving deterministic plaintext markers in an area expected to resemble random ciphertext. The markers can weaken plausible deniability during forensic inspection, although they do not disclose hidden-volume content or reduce the strength of VeraCrypt encryption. This issue is fixed in version 1.26.29.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
保护机制失效
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
veracrypt VeraCrypt >= 1.26.6, < 1.26.29 -

II. Public POCs for CVE-2026-54073

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-54073

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-54073 (1)

Vendor Advisories for CVE-2026-54073 (1)

Vendor Pages for CVE-2026-54073 (1)

IV. Related Vulnerabilities

Same product: VeraCrypt
Same vendor: veracrypt
Same weakness: CWE-693

V. Comments for CVE-2026-54073

No comments yet

Leave a comment