Vulnerabilities (CVE)

Filtered by vendor Avast Subscribe
Filtered by product Antivirus
Total 25 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2024-5102 2 Avast, Microsoft 2 Antivirus, Windows 2024-06-12 N/A 7.0 HIGH
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. A low-privileged user can make a pseudo-symlink and a junction folder and point to a file on the system. This can provide a low-privileged user an Elevation of Privilege to win a race-condition which will re-create the system files and make Windows callback to a specially-crafted file which could be used to launch a privileged shell instance. This issue affects Avast Antivirus prior to 24.2.
CVE-2020-15024 1 Avast 1 Antivirus 2024-02-14 2.1 LOW 5.5 MEDIUM
An issue was discovered in the Login Password feature of the Password Manager component in Avast Antivirus 20.1.5069.562. An entered password continues to be stored in Windows main memory after a logout, and after a Lock Vault operation.
CVE-2023-1587 3 Avast, Avg, Microsoft 3 Antivirus, Anti-virus, Windows 2024-02-04 N/A 5.5 MEDIUM
Avast and AVG Antivirus for Windows were susceptible to a NULL pointer dereference issue via RPC-interface. The issue was fixed with Avast and AVG Antivirus version 22.11
CVE-2023-1585 3 Avast, Avg, Microsoft 3 Antivirus, Anti-virus, Windows 2024-02-04 N/A 6.3 MEDIUM
Avast and AVG Antivirus for Windows were susceptible to a Time-of-check/Time-of-use (TOCTOU) vulnerability in the Quarantine process, leading to arbitrary file/directory deletion. The issue was fixed with Avast and AVG Antivirus version 22.11 and virus definitions from 14 February 2023 or later.
CVE-2023-1586 3 Avast, Avg, Microsoft 3 Antivirus, Anti-virus, Windows 2024-02-04 N/A 4.7 MEDIUM
Avast and AVG Antivirus for Windows were susceptible to a Time-of-check/Time-of-use (TOCTOU) vulnerability in the restore process leading to arbitrary file creation. The issue was fixed with Avast and AVG Antivirus version 22.11
CVE-2020-20118 1 Avast 1 Antivirus 2024-02-04 N/A 5.5 MEDIUM
Buffer Overflow vulnerability in Avast AntiVirus before v.19.7 allows a local attacker to cause a denial of service via a crafted request to the aswSnx.sys driver.
CVE-2021-45339 1 Avast 1 Antivirus 2024-02-04 7.2 HIGH 7.8 HIGH
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.
CVE-2021-45336 1 Avast 1 Antivirus 2024-02-04 7.2 HIGH 8.8 HIGH
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.
CVE-2021-45338 1 Avast 1 Antivirus 2024-02-04 7.2 HIGH 7.8 HIGH
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.
CVE-2021-45337 1 Avast 1 Antivirus 2024-02-04 7.2 HIGH 8.8 HIGH
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.
CVE-2021-45335 1 Avast 1 Antivirus 2024-02-04 7.2 HIGH 8.8 HIGH
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.
CVE-2020-10864 2 Avast, Microsoft 2 Antivirus, Windows 2024-02-04 5.0 MEDIUM 6.5 MEDIUM
An issue was discovered in Avast Antivirus before 20. The aswTask RPC endpoint for the TaskEx library in the Avast Service (AvastSvc.exe) allows attackers to trigger a reboot via RPC from a Low Integrity process.
CVE-2020-10865 2 Avast, Microsoft 2 Antivirus, Windows 2024-02-04 5.0 MEDIUM 7.5 HIGH
An issue was discovered in Avast Antivirus before 20. The aswTask RPC endpoint for the TaskEx library in the Avast Service (AvastSvc.exe) allows attackers to make arbitrary changes to the Components section of the Stats.ini file via RPC from a Low Integrity process.
CVE-2020-10860 2 Avast, Microsoft 2 Antivirus, Windows 2024-02-04 5.0 MEDIUM 7.5 HIGH
An issue was discovered in Avast Antivirus before 20. An Arbitrary Memory Address Overwrite vulnerability in the aswAvLog Log Library results in Denial of Service of the Avast Service (AvastSvc.exe).
CVE-2020-10866 2 Avast, Microsoft 2 Antivirus, Windows 2024-02-04 5.0 MEDIUM 7.5 HIGH
An issue was discovered in Avast Antivirus before 20. The aswTask RPC endpoint for the TaskEx library in the Avast Service (AvastSvc.exe) allows attackers to enumerate the network interfaces and access points from a Low Integrity process via RPC.
CVE-2020-10867 2 Avast, Microsoft 2 Antivirus, Windows 2024-02-04 7.5 HIGH 9.8 CRITICAL
An issue was discovered in Avast Antivirus before 20. The aswTask RPC endpoint for the TaskEx library in the Avast Service (AvastSvc.exe) allows attackers to bypass intended access restrictions on tasks from an untrusted process, when Self Defense is enabled.
CVE-2020-10861 2 Avast, Microsoft 2 Antivirus, Windows 2024-02-04 6.4 MEDIUM 7.5 HIGH
An issue was discovered in Avast Antivirus before 20. The aswTask RPC endpoint for the TaskEx library in the Avast Service (AvastSvc.exe) allows attackers to achieve Arbitrary File Deletion from Avast Program Path via RPC, when Self Defense is Enabled.
CVE-2020-10868 2 Avast, Microsoft 2 Antivirus, Windows 2024-02-04 5.0 MEDIUM 7.5 HIGH
An issue was discovered in Avast Antivirus before 20. The aswTask RPC endpoint for the TaskEx library in the Avast Service (AvastSvc.exe) allows attackers to launch the Repair App RPC call from a Low Integrity process.
CVE-2020-10863 2 Avast, Microsoft 2 Antivirus, Windows 2024-02-04 5.0 MEDIUM 7.5 HIGH
An issue was discovered in Avast Antivirus before 20. The aswTask RPC endpoint for the TaskEx library in the Avast Service (AvastSvc.exe) allows attackers to trigger a shutdown via RPC from a Low Integrity process via TempShutDownMachine.
CVE-2020-10862 2 Avast, Microsoft 2 Antivirus, Windows 2024-02-04 4.6 MEDIUM 7.8 HIGH
An issue was discovered in Avast Antivirus before 20. The aswTask RPC endpoint for the TaskEx library in the Avast Service (AvastSvc.exe) allows attackers to achieve Local Privilege Escalation (LPE) via RPC.