CVE-2016-20090

Comodo Dragon Browser versions up to 52.15.25.663 contain a privilege escalation vulnerability in the DragonUpdater service due to an unquoted service path running with SYSTEM privileges. A local attacker can insert a malicious executable in the service path and execute arbitrary code with elevated privileges upon service restart or system reboot.

CVSS v4.0

8.5 HIGHCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

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

EPSS

0.18% chance of exploitation in the next 30 days, 7th percentile

Published

2026-06-19

Updated

2026-06-22

Proof-of-concept exploits (1)

• https://www.exploit-db.com/exploits/40471

References

• CVE Record
• NVD entry

Related

• CVE-2016-20089
• CVE-2016-20091
• CVE-2016-20088
• CVE-2016-20092
• CVE-2016-20087
• CVE-2016-20093