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TI-2023-22492 Aliases CVE-2023-42124GHSA-4qvm-73c7-9w94

Incorrect authorization in Avast Premium Security

Priority LOW 34CWE-863Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
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-863.

Summary

Avast Premium Security Sandbox Protection Incorrect Authorization Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Avast Premium Security. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the implementation of the sandbox feature. The issue results from incorrect authorization. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code outside the sandbox at medium integrity. . Was ZDI-CAN-20178.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00302 23rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AvastPremium SecurityAvast Premium Security 22.12.6044 (build 22.12.7758.769)—No fix listedCNA
  • Premium Security VendorAvast Affected Avast Premium Security 22.12.6044 (build 22.12.7758.769) Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:avast:premium_security:22.12.6044:*:*:*:*:*:*:*22.12.6044VulnerableAvast
  • cpe:2.3:a:avast:premium_security:22.12.6044:*:*:*:*:*:*:* Versions 22.12.6044 Vulnerable ·Avast

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-42124
  2. 2026-10-03 Alias added: GHSA-4qvm-73c7-9w94

References

Advisory 1

  • 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-2022-11552 An arbitrary file write vulnerability in Avast Premium Security before v21.11.2500 (build… CVSS 3.1HIGH 7.1
  • TI-2022-11553 Multiple DLL hijacking vulnerabilities via the components instup.exe and wsc_proxy.exe in… CVSS 3.1MEDIUM 6.5
  • 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