7.8

CVE-2026-27749

Medienbericht
Exploit

Avira Internet Security System Speedup Insecure Deserialization

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 implementing input validation or deserialization safeguards. Because the file can be created or modified by a local user in default configurations, an attacker can supply a crafted serialized payload that is deserialized by the privileged process, resulting in arbitrary code execution as SYSTEM.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Avira ≫ Internet Security SwPlatformwindows Version < 1.1.114.3113
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.32% 0.238
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security@nortonlifelock.com 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-502 Deserialization of Untrusted Data

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

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17.03.2026 22:20
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Media Report
06.03.2026 11:31
https://www.gendigital.com/us/en/contact-us/security-advisories/
https://support.avira.com/hc/en-us/articles/360010656158-Current-Avira-versions
Release Notes
https://www.avira.com/en/internet-security
Product