What’s Vulnerable › Vulnerabilities
CVE-2021-38085
- Severity: high (CVSS 7.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.0% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2021-08-11 · updated 2026-06-17
- Weakness: CWE-732
Description
The Canon TR150 print driver through 3.71.2.10 is vulnerable to a privilege escalation issue. During the add printer process, a local attacker can overwrite CNMurGE.dll and, if timed properly, the overwritten DLL will be loaded into a SYSTEM process resulting in escalation of privileges. This occurs because the driver drops a world-writable DLL into a CanonBJ %PROGRAMDATA% location that gets loaded by printisolationhost (a system process).
Affected products
- Canon Pixma Tr150 Firmware: through 3.71.2.10
References
- http://packetstormsecurity.com/files/163795/Canon-TR150-Driver-3.71.2.10-Privilege-Escalation.html
- https://defcon.org/html/defcon-29/dc-29-speakers.html#baines
- https://raw.githubusercontent.com/jacob-baines/vuln_disclosure/main/vuln_2021_03.txt
- https://www.youtube.com/watch?v=vdesswZYz-8
- http://packetstormsecurity.com/files/163795/Canon-TR150-Driver-3.71.2.10-Privilege-Escalation.html
- https://defcon.org/html/defcon-29/dc-29-speakers.html#baines
- https://raw.githubusercontent.com/jacob-baines/vuln_disclosure/main/vuln_2021_03.txt
- https://www.youtube.com/watch?v=vdesswZYz-8
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