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CVE-2026-81717

openssl_encrypt before 1.4.9 Integrity Bypass via Added Files

Published: Aug 27, 2026Updated: Sep 2, 2026 Sources: CVE List NVDCWE-347
3.5LOW
NVD MITRE
EPSS Score
0.1%
Top 99.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

openssl_encrypt (pip package openssl-encrypt) before 1.4.9 contains two weaknesses in the portable USB drive feature, whose threat model treats the removable drive as untrusted (attacker with physical write access). USBDriveCreator._verify_integrity_file only validates files listed in the manifest, so files added to the drive — including a root-level autorun payload — are not detected and integrity verification still passes. Additionally, a globally constant, source-embedded KDF salt (_LEGACY_FIXED_SALT) is used to derive the drive encryption key for any drive lacking a per-drive salt file, defeating precomputation resistance and enabling an offline rainbow-table attack.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:PAC:LPR:NUI:NS:UC:LI:LA:N
Exploitability
AV:PAttack Vector
Physical
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-347

Affected Products

jahlives
openssl_encrypt
openssl encrypt

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Collection
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References

https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-8jx3-27qf-3p97
github.com
https://www.vulncheck.com/advisories/openssl-encrypt-before-1.4.9-integrity-bypass-via-added-files
vulncheck.com

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