Cross-user code execution via unsigned native module
Published Jul 12, 2023 · Updated Jul 9, 2026
Improper module integrity validation in DigiExam 14.0.2 and earlier allows local users to execute code in later user sessions. The Windows Electron client loads the user-writable dx-sec native module without verifying its integrity, so a replacement module can disable virtual-machine and process controls. The attacker must replace the module in a shared Windows profile; malicious code then runs when a later examinee starts DigiExam, exposing that session's data and account.
Summary
What happened
Improper module integrity validation in DigiExam 14.0.2 and earlier allows local users to execute code in later user sessions. The Windows Electron client loads the user-writable dx-sec native module without verifying its integrity, so a replacement module can disable virtual-machine and process controls. The attacker must replace the module in a shared Windows profile; malicious code then runs when a later examinee starts DigiExam, exposing that session's data and account.
The record
- CVE
- CVE-2023-33668
- Published
- Jul 12, 2023
- Updated
- Jul 9, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-354, T1554
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 12, 2023CVE publishedPublication date reported by the CVE source.
- Jul 9, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- dx-sec native-module replacement demonstrationproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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