CVE-2026-54073 (GCVE-0-2026-54073)
Vulnerability from cvelistv5 – Published: 2026-08-21 18:51 – Updated: 2026-08-21 19:32
VLAI
EPSS
VEX
Title
VeraCrypt: Hidden volume quick format weakens plausible deniability
Summary
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.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 19:32 UTC
CWE
- CWE-693 - Protection Mechanism Failure
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/veracrypt/VeraCrypt/security/a… | x_refsource_CONFIRM |
| https://github.com/veracrypt/VeraCrypt/commit/689… | x_refsource_MISC |
| https://github.com/veracrypt/VeraCrypt/releases/t… | x_refsource_MISC |
Impacted products
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}
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"dateReserved": "2026-06-11T18:24:35.098Z",
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"value": "VeraCrypt proporciona cifrado de disco con seguridad robusta basado en TrueCrypt. Desde la versi\u00f3n 1.26.6 hasta la 1.26.29, la creaci\u00f3n de vol\u00famenes ocultos alojados en archivos fuerza el formato r\u00e1pido y la funci\u00f3n FormatNoFs en src/Common/Format.c y la funci\u00f3n FormatFat en src/Common/Fat.c usan WriteFile para colocar sectores en bruto rellenados con ceros en intervalos predecibles de 128 MiB. Estas escrituras eluden la ruta de formato normal de EncryptDataUnits, dejando marcadores de texto plano deterministas en un \u00e1rea que se espera que se asemeje a un texto cifrado aleatorio. Los marcadores pueden debilitar la negaci\u00f3n plausible durante una inspecci\u00f3n forense, aunque no revelan el contenido del volumen oculto ni reducen la fuerza del cifrado de VeraCrypt. Este problema est\u00e1 solucionado en la versi\u00f3n 1.26.29."
}
],
"id": "CVE-2026-54073",
"lastModified": "2026-10-14T19:10:00.297",
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"exploitMaturity": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
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"subConfidentialityImpact": "NONE",
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"valueDensity": "NOT_DEFINED",
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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