Avira Internet Security — known CVE vulnerabilities

Every CVE whose affected-product data names Avira Internet Security, ordered by CVSS severity, with EPSS exploit prediction and CISA KEV status.

CVEs (3)

• CVE-2026-27748 — CVSS 7.8 (high): Avira Internet Security contains an improper link resolution vulnerability in the Software Updater component. During the update process, a…
• CVE-2026-27749 — CVSS 7.8 (high): Avira Internet Security contains a deserialization of untrusted data vulnerability in the System Speedup component. The…
• CVE-2026-27750 — CVSS 7.8 (high): Avira Internet Security contains a time-of-check time-of-use (TOCTOU) vulnerability in the Optimizer component. A privileged service…