CVE-2026-27748
7.8 · HIGHOverview
CVE-2026-27748 is a high-severity vulnerability affecting avira internet_security. It was published on March 5, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from avira. Update internet_security to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| avira | internet_security | >= 0, < 1.1.114.3113 | Affected |
Frequently Asked Questions
What is CVE-2026-27748?
CVE-2026-27748 is a high-severity vulnerability affecting avira internet_security. It was published on March 5, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).
How severe is CVE-2026-27748?
This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-27748?
Check the references section for vendor advisories and patches from avira. Update internet_security to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-27748?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-27748 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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