Priority HIGH 73
Improper preservation of permissions in the Avast sandbox minifilter driver (aswSnx.sys) on Windows allows a local, low-privileged attacker executing inside the sandbox to escape file isolation and escalate to SYSTEM.
CVSS 3.1HIGH 8.8· Local · Low privileges · No interaction · EPSS 0.00157 · Published 2026-09-16 · Fixed in 26.8 CWE-281
Priority HIGH 69
Avira Internet Security contains a time-of-check time-of-use (TOCTOU) vulnerability in the Optimizer component.
CVSS 3.1HIGH 7.8· Local · Low privileges · No interaction · EPSS 0.00114 · Published 2026-03-05 · Fixed in 1.1.114.3113 CWE-367
Priority HIGH 69
Avira Internet Security contains a deserialization of untrusted data vulnerability in the System Speedup component.
CVSS 3.1HIGH 7.8· Local · Low privileges · No interaction · EPSS 0.00356 · Published 2026-03-05 · Fixed in 1.1.114.3113 CWE-502
Priority HIGH 69
Avira Internet Security contains an improper link resolution vulnerability in the Software Updater component.
CVSS 3.1HIGH 7.8· Local · Low privileges · No interaction · EPSS 0.00194 · Published 2026-03-05 · Fixed in 1.1.114.3113 CWE-59
Priority HIGH 68
Use-after-free vulnerability in the Update Manager service in Avira Management Console allows remote attackers to execute arbitrary code via a large header.
CVSS 2.0HIGH 10.0· Network · No auth · Interaction — · EPSS 0.35159 · Published 2015-09-21 · No fix listed
Priority HIGH 67
An issue was discovered in Avira Phantom VPN through 2.23.1 for macOS.
CVSS 3.1HIGH 7.3· Adjacent network · No auth · User interaction · EPSS 0.00531 · Published 2023-08-09 · No fix listed CWE-319
Priority HIGH 65
The TAR file parser in AhnLab V3 Internet Security 2011.01.18.00, Avira AntiVir 7.11.1.163, Antiy Labs AVL SDK 2.0.3.7, avast! Antivirus 4.8.1351.0 and 5.0.677.0, AVG Anti-Virus 10.0.0.1190, Bitdefender 7.2, Quick Heal (…
CVSS 2.0MEDIUM 4.3· Network · No auth · Interaction — · EPSS 0.99992 · Published 2012-03-21 · No fix listed CWE-264
Priority HIGH 65
The TAR file parser in Avira AntiVir 7.11.1.163, Antiy Labs AVL SDK 2.0.3.7, avast! Antivirus 4.8.1351.0 and 5.0.677.0, AVG Anti-Virus 10.0.0.1190, Bitdefender 7.2, Quick Heal (aka Cat QuickHeal) 11.00, ClamAV 0.96.4, Co…
CVSS 2.0MEDIUM 4.3· Network · No auth · Interaction — · EPSS 0.99854 · Published 2012-03-21 · No fix listed CWE-264
Priority HIGH 65
The RAR file parser in ClamAV 0.96.4, Rising Antivirus 22.83.00.03, Quick Heal (aka Cat QuickHeal) 11.00, G Data AntiVirus 21, AVEngine 20101.3.0.103 in Symantec Endpoint Protection 11, Command Antivirus 5.2.11.5, Ikarus…
CVSS 2.0MEDIUM 4.3· Network · No auth · Interaction — · EPSS 0.9998 · Published 2012-03-21 · No fix listed CWE-264
Priority MEDIUM 63
The TAR file parser in Avira AntiVir 7.11.1.163, Antiy Labs AVL SDK 2.0.3.7, Quick Heal (aka Cat QuickHeal) 11.00, Emsisoft Anti-Malware 5.1.0.1, Fortinet Antivirus 4.2.254.0, Ikarus Virus Utilities T3 Command Line Scann…
CVSS 2.0MEDIUM 4.3· Network · No auth · Interaction — · EPSS 0.92229 · Published 2012-03-21 · No fix listed CWE-264
Priority MEDIUM 53
Buffer overflow in the file parsing engine in Avira Antivir Antivirus before 7.03.00.09 allows remote attackers to execute arbitrary code via a crafted LZH archive file, resulting from an "integer cast around."
CVSS 2.0HIGH 10.0· Network · No auth · Interaction — · EPSS 0.07526 · Published 2007-06-01 · No fix listed
Priority MEDIUM 47
Avira Antivirus engine versions before 8.3.36.60 allow remote code execution as NT AUTHORITY\SYSTEM via a section header with a very large relative virtual address in a PE file, causing an integer overflow and heap-based…
CVSS 3.1HIGH 7.8· Local · No auth · User interaction · EPSS 0.10215 · Published 2017-07-27 · No fix listed CWE-119
Priority MEDIUM 46
An issue was discovered in Avira Free-Antivirus before 15.0.2004.1825.
CVSS 3.1CRITICAL 9.8· Network · No auth · No interaction · EPSS 0.02048 · Published 2020-04-09 · No fix listed
Priority MEDIUM 42
A vulnerability within the Software Updater functionality of Avira Security for Windows allowed an attacker with write access to the filesystem, to escalate his privileges in certain scenarios.
CVSS 3.1HIGH 8.8· Network · Low privileges · No interaction · EPSS 0.0109 · Published 2022-10-17 · Fixed in 1.1.71.30554 CWE-276
Priority MEDIUM 40
Avira Antivir Antivirus before 7.03.00.09 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a malformed TAR archive.
CVSS 2.0HIGH 7.8· Network · No auth · Interaction — · EPSS 0.03438 · Published 2007-06-01 · No fix listed
Priority MEDIUM 40
The file parsing engine in Avira Antivir Antivirus before 7.04.00.24 allows remote attackers to cause a denial of service (application crash) via a crafted UPX compressed file, which triggers a divide-by-zero error.
CVSS 2.0HIGH 7.8· Network · No auth · Interaction — · EPSS 0.03413 · Published 2007-06-01 · No fix listed
Priority MEDIUM 40
unzoo.c, as used in multiple products including AMaViS 2.4.1 and earlier, allows remote attackers to cause a denial of service (infinite loop) via a ZOO archive with a direntry structure that points to a previous file.
CVSS 2.0HIGH 7.8· Network · No auth · Interaction — · EPSS 0.03178 · Published 2007-05-09 · No fix listed CWE-399
Priority MEDIUM 40
Stack-based buffer overflow in AVIRA Desktop for Windows 1.00.00.68 with AVPACK32.DLL 6.31.0.3, when archive scanning is enabled, allows remote attackers to execute arbitrary code via a long filename in an ACE archive.
CVSS 2.0HIGH 7.5· Network · No auth · Interaction — · EPSS 0.04035 · Published 2005-09-16 · No fix listed
Priority LOW 39
A privilege escalation vulnerability exists during the installation of Norton Secure VPN via the Microsoft Store.
CVSS 3.1HIGH 8.8· Local · Low privileges · No interaction · EPSS 0.00139 · Published 2026-05-04 · No fix listed CWE-1386
Priority LOW 39
Avira Free Antivirus 15.0.1907.1514 is prone to a local privilege escalation through the execution of kernel code from a restricted user.
CVSS 3.1HIGH 8.8· Local · Low privileges · No interaction · EPSS 0.00741 · Published 2019-12-31 · No fix listed CWE-680
Priority LOW 38
Avira Prime Link Following Local Privilege Escalation Vulnerability.
CVSS 3.0HIGH 7.8· Local · Low privileges · No interaction · EPSS 0.00956 · Published 2024-05-22 · No fix listed CWE-59
Priority LOW 38
avpack32.dll before 7.3.0.6 in Avira AntiVir allows remote attackers to cause a denial of service (infinite loop) via a ZOO archive with a direntry structure that points to a previous file.
CVSS 2.0HIGH 7.8· Network · No auth · Interaction — · EPSS 0.02022 · Published 2007-05-09 · No fix listed
Priority LOW 35
Link following vulnerability in the Uninstaller component in CCleaner prior to 7.10.1464 on Windows allows a local, low-privileged attacker to escalate privileges to SYSTEM via a symlink/junction created during applicati…
CVSS 3.1HIGH 7.8· Local · Low privileges · No interaction · EPSS 0.00174 · Published 2026-08-05 · Fixed in 7.10.1464 CWE-59
Priority LOW 35
Heap buffer out-of-bounds write vulnerability in Avira Antivirus engine when scanning a malformed POSIX tar archive may allow Local Execution of Code or Denial-of-Service of the antivirus engine process.
CVSS 3.1HIGH 7.8· Local · No auth · User interaction · EPSS 0.00122 · Published 2026-06-12 · Fixed in 8.3.27.12 CWE-787
Priority LOW 35
Heap buffer out-of-bounds write vulnerability due to integer overflow in Avira Antivirus engine when scanning a malformed MS-DOS executable file may allow Local Execution of Code or Denial-of-Service of the antivirus eng…
CVSS 3.1HIGH 7.8· Local · No auth · User interaction · EPSS 0.00122 · Published 2026-06-12 · Fixed in 8.3.70.104 CWE-190
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