Vulnerabilities > Avast > High

DATE CVE VULNERABILITY TITLE RISK
2024-06-10 CVE-2024-5102 Link Following vulnerability in Avast Antivirus
A sym-linked file accessed via the repair function in Avast Antivirus <24.2 on Windows may allow user to elevate privilege to delete arbitrary files or run processes as NT AUTHORITY\SYSTEM. The vulnerability exists within the "Repair" (settings -> troubleshooting -> repair) feature, which attempts to delete a file in the current user's AppData directory as NT AUTHORITY\SYSTEM.
local
high complexity
avast CWE-59
7.0
2023-11-08 CVE-2023-5760 Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in Avast AVG Antivirus 23.8
A time-of-check to time-of-use (TOCTOU) bug in handling of IOCTL (input/output control) requests.
local
high complexity
avast CWE-367
7.0
2023-01-10 CVE-2022-4294 Norton, Avira, Avast and AVG Antivirus for Windows may be susceptible to a Privilege Escalation vulnerability, which is a type of issue whereby an attacker may attempt to compromise the software application to gain elevated access to resources that are normally protected from an application or user.
local
low complexity
avira norton avast avg
7.8
2022-12-06 CVE-2022-4173 Improper Privilege Management vulnerability in Avast and AVG Antivirus
A vulnerability within the malware removal functionality of Avast and AVG Antivirus allowed an attacker with write access to the filesystem, to escalate his privileges in certain scenarios.
network
low complexity
avast CWE-269
8.8
2022-05-20 CVE-2022-28964 Untrusted Search Path vulnerability in Avast Premium Security 19.8.2393/20.8.2429
An arbitrary file write vulnerability in Avast Premium Security before v21.11.2500 (build 21.11.6809.528) allows attackers to cause a Denial of Service (DoS) via a crafted DLL file.
local
low complexity
avast CWE-426
7.1
2021-12-27 CVE-2021-45335 Incorrect Default Permissions vulnerability in Avast Antivirus
Sandbox component in Avast Antivirus prior to 20.4 has an insecure permission which could be abused by local user to control the outcome of scans, and therefore evade detection or delete arbitrary system files.
local
low complexity
avast CWE-276
8.8
2021-12-27 CVE-2021-45336 Unspecified vulnerability in Avast Antivirus
Privilege escalation vulnerability in the Sandbox component of Avast Antivirus prior to 20.4 allows a local sandboxed code to gain elevated privileges by using system IPC interfaces which could lead to exit the sandbox and acquire SYSTEM privileges.
local
low complexity
avast
8.8
2021-12-27 CVE-2021-45337 Unspecified vulnerability in Avast Antivirus
Privilege escalation vulnerability in the Self-Defense driver of Avast Antivirus prior to 20.8 allows a local user with SYSTEM privileges to gain elevated privileges by "hollowing" process wsc_proxy.exe which could lead to acquire antimalware (AM-PPL) protection.
local
low complexity
avast
8.8
2021-12-27 CVE-2021-45338 Unspecified vulnerability in Avast Antivirus
Multiple privilege escalation vulnerabilities in Avast Antivirus prior to 20.4 allow a local user to gain elevated privileges by calling unnecessarily powerful internal methods of the main antivirus service which could lead to the (1) arbitrary file delete, (2) write and (3) reset security.
local
low complexity
avast
7.8
2021-12-27 CVE-2021-45339 Incorrect Authorization vulnerability in Avast Antivirus
Privilege escalation vulnerability in Avast Antivirus prior to 20.4 allows a local user to gain elevated privileges by "hollowing" trusted process which could lead to the bypassing of Avast self-defense.
local
low complexity
avast CWE-863
7.8