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CVE-2026-54073 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/veracrypt/VeraCrypt/security/advisories/GHSA-jjcr-75w7-58jp	CISA-ADP
https://github.com/veracrypt/VeraCrypt/commit/689a59cd584f090ca5f9214d5f2f3a9eac499e53	[email protected]
https://github.com/veracrypt/VeraCrypt/releases/tag/VeraCrypt_1.26.29	[email protected]
https://github.com/veracrypt/VeraCrypt/security/advisories/GHSA-jjcr-75w7-58jp	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-693	Protection Mechanism Failure	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Aug 21, 2026	CVE Modified	CISA-ADP
Aug 21, 2026	New CVE Received	[email protected]