What is CVE-2024-9484?

CVE-2024-9484 is a medium-severity vulnerability in Avast Antivirus, classified under NULL Pointer Dereference. CVSS score: 5.1/10. Published 2024-10-04.

How severe is CVE-2024-9484?

Medium severity. CVSS v3 base score is 5.1 out of 10.

NULL pointer dereference in Avast Antivirus

CVE-2024-9484

An null-pointer-derefrence in the engine module in AVG/Avast Antivirus signature <24092400 released on 24/Sep/2024 on MacOS allows a malformed xar file to crash the application during file processing.

Published 2024-10-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.1 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.001 (2.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 2.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000

Affected products

Avast Antivirus
Avg Antivirus
Avg/avast Antivirus — versions 24/Sep/2024

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

support.norton.com/sp/static/external/tools/security-advisories.html (Not Applicable)

Frequently asked questions

What is CVE-2024-9484?: CVE-2024-9484 is a medium-severity vulnerability in Avast Antivirus, classified under NULL Pointer Dereference. CVSS score: 5.1/10. Published 2024-10-04.
How severe is CVE-2024-9484?: Medium severity. CVSS v3 base score is 5.1 out of 10.