CVE-2025-7003

CVE-2025-7003 describes a heap buffer out-of-bounds read in the Avira Antivirus engine when scanning malformed PDF files, potentially enabling local code execution or denial-of-service. Affected: Avira Antivirus engine on Windows, macOS, and Linux for builds prior to 8.3.70.56. Exploitation detai...

CVE-2025-7003 Avira antivirus engine heap buffer OOB read when scanning a malformed PDF file (variant 1)

Heap buffer out-of-bounds read vulnerability in Avira Antivirus engine when scanning a malformed PDF file may allow Local Execution of Code or Denial-of-Service of the antivirus engine process. This issue affects Avira Antivirus on Windows, macOS, and Linux for engine builds before 8.3.70.56...

CVE-2025-7002 Avira antivirus engine heap buffer OOB read when scanning a malformed PDF file (variant 2)

Heap buffer out-of-bounds read vulnerability in Avira Antivirus engine when scanning a malformed PDF file may allow Local Execution of Code or Denial-of-Service of the antivirus engine process. This issue affects Avira Antivirus on Windows, macOS, and Linux for engine builds before 8.3.70.68...

CVE-2025-7002

CVE-2025-7002 is a heap buffer out-of-bounds read vulnerability in the Avira Antivirus engine when scanning a malformed PDF, potentially allowing local code execution or crashing the antivirus process. Affected products are Avira Antivirus engines on Windows, macOS, and Linux with builds prior to...

CVE-2025-7002 Avira antivirus engine heap buffer OOB read when scanning a malformed PDF file (variant 2)

Heap buffer out-of-bounds read vulnerability in Avira Antivirus engine when scanning a malformed PDF file may allow Local Execution of Code or Denial-of-Service of the antivirus engine process. This issue affects Avira Antivirus on Windows, macOS, and Linux for engine builds before 8.3.70.68...

PT-2026-49017

Name of the Vulnerable Software and Affected Versions Avira Antivirus versions prior to 8.3.70.56 Description A heap buffer out-of-bounds read occurs in the antivirus engine when scanning a malformed Windows MSI file. This issue may lead to local execution of code or a denial-of-service of the...

PT-2026-49018

Name of the Vulnerable Software and Affected Versions Avira Antivirus versions prior to 8.3.70.64 Description A null pointer dereference occurs in the antivirus engine when scanning a malformed Windows PE Portable Executable file. This issue can lead to a Denial-of-Service of the antivirus engine...

PT-2026-49049

Name of the Vulnerable Software and Affected Versions Avira Password Manager affected versions not specified Description An information disclosure issue exists in Avira Password Manager when used with Mozilla Firefox on Windows, macOS, and Linux. A remote attacker operating a cross-origin iframe...

PT-2026-49009

Name of the Vulnerable Software and Affected Versions Avira Antivirus versions prior to 8.3.70.56 Description A heap buffer out-of-bounds read occurs in the antivirus engine when scanning a malformed PDF file. This issue may lead to local execution of code or a denial-of-service of the engine...

PT-2026-49047

Name of the Vulnerable Software and Affected Versions Avira Antivirus versions prior to 8.3.70.98 Description A heap buffer out-of-bounds read occurs in the antivirus engine when scanning a malformed Windows PE Portable Executable file. This issue may lead to local execution of code or a...

PT-2026-49008

Name of the Vulnerable Software and Affected Versions Avira Antivirus versions prior to 8.3.70.68 Description A heap buffer out-of-bounds read occurs in the antivirus engine when scanning a malformed PDF file. This issue may lead to local execution of code or a denial-of-service of the engine...

PT-2026-49050

Name of the Vulnerable Software and Affected Versions Avira Antivirus versions prior to 8.3.27.12 Description A heap buffer out-of-bounds write occurs in the Avira Antivirus engine when scanning a malformed POSIX tar archive. This flaw may allow local execution of code or a denial-of-service of t...

PT-2026-49046

Name of the Vulnerable Software and Affected Versions Avira Antivirus versions prior to 8.3.70.104 Description A heap buffer out-of-bounds write occurs due to an integer overflow in the antivirus engine when scanning a malformed MS-DOS executable file. This can lead to local execution of code or ...

PT-2026-49048

Name of the Vulnerable Software and Affected Versions Avira Antivirus versions prior to 8.3.70.76 Description A heap buffer out-of-bounds read occurs in the antivirus engine when scanning a malformed PDF file. This issue may lead to local execution of code or a denial-of-service of the engine...

CVE-2026-27749

Avira Internet Security contains a deserialization of untrusted data vulnerability in the System Speedup component. The Avira.SystemSpeedup.RealTimeOptimizer.exe process, which runs with SYSTEM privileges, deserializes data from a file located in C:\\ProgramData using .NET BinaryFormatter without...

CVE-2026-27748

Avira Internet Security contains an improper link resolution vulnerability in the Software Updater component. During the update process, a privileged service running as SYSTEM deletes a file under C:\\ProgramData without validating whether the path resolves through a symbolic link or reparse...

EUVD-2026-9821

Avira Internet Security contains a deserialization of untrusted data vulnerability in the System Speedup component. The Avira.SystemSpeedup.RealTimeOptimizer.exe process, which runs with SYSTEM privileges, deserializes data from a file located in C:\ProgramData using .NET BinaryFormatter without...

EUVD-2026-9820

Avira Internet Security contains an improper link resolution vulnerability in the Software Updater component. During the update process, a privileged service running as SYSTEM deletes a file under C:\ProgramData without validating whether the path resolves through a symbolic link or reparse point...

EUVD-2026-9822

Avira Internet Security contains a time-of-check time-of-use TOCTOU vulnerability in the Optimizer component. A privileged service running as SYSTEM identifies directories for cleanup during a scan phase and subsequently deletes them during a separate cleanup phase without revalidating the target...

CVE-2026-27750

Avira Internet Security contains a time-of-check time-of-use TOCTOU vulnerability in the Optimizer component. A privileged service running as SYSTEM identifies directories for cleanup during a scan phase and subsequently deletes them during a separate cleanup phase without revalidating the target...