Vulnerability in Avira Internet Security
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 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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (7.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 7.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Avira Internet Security
- Gen Digital Inc. Avira Internet Security — versions 0, 1.1.114.3113
Weakness classification (CWE)
References
- support.avira.com/hc/en-us/articles/360010656158-Current-Avira-versions (release-notes, Release Notes)
- www.avira.com/en/internet-security (Product, product)
- www.gendigital.com/us/en/contact-us/security-advisories/ (vendor-advisory)
Frequently asked questions
- What is CVE-2026-27748?
- CVE-2026-27748 is a high-severity vulnerability in Avira Internet Security, classified under Improper Link Resolution Before File Access. CVSS score: 7.8/10. Published 2026-03-05.
- How severe is CVE-2026-27748?
- High severity. CVSS v3 base score is 7.8 out of 10.