CVE-2022-28965

Name: CVE-2022-28965
Creator: NVD / NIST
Published: 2022-05-20T02:15:07.263+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.28%

Last modified Jun 17, 2026

CVE-2022-28965 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Multiple DLL hijacking vulnerabilities via the components instup.exe and wsc_proxy.exe in Avast Premium Security before v21.11.2500 allows attackers to execute arbitrary code or cause a Denial of Service (DoS) via a crafted DLL file.. EPSS estimates a 0.28% chance of exploitation in the next 30 days.

Description

Multiple DLL hijacking vulnerabilities via the components instup.exe and wsc_proxy.exe in Avast Premium Security before v21.11.2500 allows attackers to execute arbitrary code or cause a Denial of Service (DoS) via a crafted DLL file.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.28%

19.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-427

Affected Software

Vendor	Product	Versions
Avast	Premium Security	< 21.11.2500

References

https://forum.avast.com/index.php?topic=318305.0Patch, Release Notes, Vendor Advisory
https://github.com/netero1010/Vulnerability-Disclosure/tree/main/CVE-2022-AVAST2Third Party Advisory
https://forum.avast.com/index.php?topic=318305.0Patch, Release Notes, Vendor Advisory
https://github.com/netero1010/Vulnerability-Disclosure/tree/main/CVE-2022-AVAST2Third Party Advisory

Timeline

Published: May 20, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-28965?

How severe is CVE-2022-28965?

CVE-2022-28965 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.

How do I fix CVE-2022-28965?

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-2022-28965?

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

Scan your code now

Source: NVD / NIST