CVE-2021-38085

Name: CVE-2021-38085
Creator: NVD / NIST
Published: 2021-08-11T18:15:07.5+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 1.01%

Last modified Jun 17, 2026

CVE-2021-38085 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. EPSS estimates a 1.01% chance of exploitation in the next 30 days.

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).

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.01%

58.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-732

Affected Software

Vendor	Product	Versions
Canon	Pixma Tr150 Firmware	<= 3.71.2.10

References

http://packetstormsecurity.com/files/163795/Canon-TR150-Driver-3.71.2.10-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
https://defcon.org/html/defcon-29/dc-29-speakers.html#bainesThird Party Advisory
https://raw.githubusercontent.com/jacob-baines/vuln_disclosure/main/vuln_2021_03.txtThird Party Advisory
https://www.youtube.com/watch?v=vdesswZYz-8Exploit, Third Party Advisory
http://packetstormsecurity.com/files/163795/Canon-TR150-Driver-3.71.2.10-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
https://defcon.org/html/defcon-29/dc-29-speakers.html#bainesThird Party Advisory
https://raw.githubusercontent.com/jacob-baines/vuln_disclosure/main/vuln_2021_03.txtThird Party Advisory
https://www.youtube.com/watch?v=vdesswZYz-8Exploit, Third Party Advisory

Timeline

Published: Aug 11, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-38085?

How severe is CVE-2021-38085?

CVE-2021-38085 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.01% probability of exploitation in the next 30 days.

How do I fix CVE-2021-38085?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-38085?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST