CVE-2020-10551

Name: CVE-2020-10551
Creator: NVD / NIST
Published: 2020-04-09T13:15:12.56+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 1.41%

Last modified Jun 17, 2026

CVE-2020-10551 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. QQBrowser before 10.5.3870.400 installs a Windows service TsService.exe. This file is writable by anyone belonging to the NT AUTHORITY\Authenticated Users group, which includes all local and remote users. EPSS estimates a 1.41% chance of exploitation in the next 30 days.

Description

QQBrowser before 10.5.3870.400 installs a Windows service TsService.exe. This file is writable by anyone belonging to the NT AUTHORITY\Authenticated Users group, which includes all local and remote users. This can be abused by local attackers to escalate privileges to NT AUTHORITY\SYSTEM by writing a malicious executable to the location of TsService.

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

1.41%

69.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-732

Affected Software

Vendor	Product	Versions
Tencent	Qqbrowser	< 10.5.3870.400

References

https://github.com/seqred-s-a/CVE-2020-10551Third Party Advisory
https://seqred.pl/en/cve-2020-10551-privilege-escalation-in-qqbrowser/Third Party Advisory
https://github.com/seqred-s-a/CVE-2020-10551Third Party Advisory
https://seqred.pl/en/cve-2020-10551-privilege-escalation-in-qqbrowser/Third Party Advisory

Timeline

Published: Apr 9, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-10551?

How severe is CVE-2020-10551?

CVE-2020-10551 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.41% probability of exploitation in the next 30 days.

How do I fix CVE-2020-10551?

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-2020-10551?

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

Scan your code now

Source: NVD / NIST