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. A local attacker can create a malicious link to redirect the delete operation to an arbitrary file, resulting in deletion of attacker-chosen files with SYSTEM privileges. This may lead to local privilege escalation, denial of service, or system integrity compromise depending on the targeted file and operating system configuration.
History

Fri, 06 Mar 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 06 Mar 2026 15:30:00 +0000

Type Values Removed Values Added
First Time appeared Gen Digital
Gen Digital avira Internet Security
Vendors & Products Gen Digital
Gen Digital avira Internet Security

Fri, 06 Mar 2026 11:15:00 +0000

Type Values Removed Values Added
First Time appeared Avira
Avira avira Internet Security Suite
CPEs cpe:2.3:a:avira:avira_internet_security_suite:*:*:*:*:*:windows:*:*
Vendors & Products Avira
Avira avira Internet Security Suite

Thu, 05 Mar 2026 22:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}


Thu, 05 Mar 2026 14:30:00 +0000

Type Values Removed Values Added
Description 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. A local attacker can create a malicious link to redirect the delete operation to an arbitrary file, resulting in deletion of attacker-chosen files with SYSTEM privileges. This may lead to local privilege escalation, denial of service, or system integrity compromise depending on the targeted file and operating system configuration.
Title Avira Internet Security Arbitrary File Deletion via Improper Link Resolution
Weaknesses CWE-59
References
Metrics cvssV4_0

{'score': 8.5, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-03-06T18:16:46.592Z

Reserved: 2026-02-23T21:38:48.842Z

Link: CVE-2026-27748

cve-icon Vulnrichment

Updated: 2026-03-06T18:16:43.443Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-05T15:16:11.747

Modified: 2026-03-05T23:16:20.327

Link: CVE-2026-27748

cve-icon Redhat

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