{"cve":"CVE-2026-54073","nvd":{"published":"2026-08-21T19:17:02.870","modified":"2026-10-14T19:10:00.297","status":"Awaiting Analysis","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.","cvss_v4":{"vector":"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","score":4.6},"cvss_v3":null,"cwes":["CWE-693"],"references":["https://github.com/veracrypt/VeraCrypt/commit/689a59cd584f090ca5f9214d5f2f3a9eac499e53","https://github.com/veracrypt/VeraCrypt/releases/tag/VeraCrypt_1.26.29","https://github.com/veracrypt/VeraCrypt/security/advisories/GHSA-jjcr-75w7-58jp","https://github.com/veracrypt/VeraCrypt/security/advisories/GHSA-jjcr-75w7-58jp"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:49:38.260478770+00:00"},"epss":{"cve":"CVE-2026-54073","score":0.00141,"percentile":0.03401,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}