---
cve: "CVE-2026-81717"
severity: "CRITICAL"
cvss: 9.3
epss: "0.1%"
vendor: "jahlives"
kev: false
exploited: false
published: "2026-08-27 17:21:02"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T12:27:34+02:00"
---

# CVE-2026-81717

> 9.3 CRITICAL · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 39b0a010cae90520f74b7194f61fedd43af04ef8 (Commit)

## Referenzen

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

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-81717) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_