TI-2022-11553 Aliases CVE-2022-28965 GHSA-rpg4-8g9f-9p3r

Multiple DLL hijacking vulnerabilities via the components instup.exe and wsc_proxy.exe in…

LOW 29CWE-427Published 2022-05-20 · Updated 2024-08-03

Key facts

Attack vector: Local
Privileges required: High
User interaction: Required
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-427.

Summary

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.

Why it matters now

EPSS 0.00295 22nd percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:avast:premium_security::::::::	before 21.11.2500	Vulnerable	Avast

cpe:2.3:a:avast:premium_security:*:*:*:*:*:*:*:* Versions before 21.11.2500 Vulnerable ·Avast

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2022-28965
2026-10-03 Alias added: GHSA-rpg4-8g9f-9p3r

References

Patch 1

https://forum.avast.com/index.php?topic=318305.0

Advisory 1

https://github.com/netero1010/Vulnerability-Disclosure/tree/main/CVE-2022-AVAST2

TI-2019-13619 In Avast Premium Security 19.8.2393, attackers can send a specially crafted request to… CVSS 3.1HIGH 7.8
TI-2023-22493 Link following in Avast Premium Security CVSS 3.0HIGH 7.8
TI-2023-22492 Incorrect authorization in Avast Premium Security CVSS 3.1HIGH 7.8
TI-2022-11552 An arbitrary file write vulnerability in Avast Premium Security before v21.11.2500 (build… CVSS 3.1HIGH 7.1
TI-2021-08781 Link following in Avast Premium Security CVSS 3.1MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences