How severe is CVE-2024-9483?

CVE-2024-9483 has a CVSS 3.x base score of 5.1, rated medium severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2024-9483 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-9483?

CVE-2024-9483 primarily affects Avast Antivirus. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-9483?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-9483 have an EU (EUVD) identifier?

Yes. CVE-2024-9483 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-49971.

When was CVE-2024-9483 published?

CVE-2024-9483 was published on 2024-10-04 and last updated on 2026-06-17.

CVE-2024-9483

CVE-2024-9483 is a medium-severity vulnerability in Avast Antivirus with a CVSS 3.x base score of 5.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.

Key facts

Severity: Medium (CVSS 3.x base score 5.1)
EPSS exploit prediction: 0% (3rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-49971
Weakness: CWE-476
Affected product: Avast Antivirus
Published: 2024-10-04
Last modified: 2026-06-17

Description

A null-pointer-dereference in the signature verification module in AVG/Avast Antivirus signature <24092400 released on 24/Sep/2024 on MacOS may allow a malformed xar file to crash the application during processing.

Frequently asked questions

What is CVE-2024-9483?: A null-pointer-dereference in the signature verification module in AVG/Avast Antivirus signature <24092400 released on 24/Sep/2024 on MacOS may allow a malformed xar file to crash the application during processing.
How severe is CVE-2024-9483?: CVE-2024-9483 has a CVSS 3.x base score of 5.1, rated medium severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2024-9483 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-9483?: CVE-2024-9483 primarily affects Avast Antivirus. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-9483?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-9483 have an EU (EUVD) identifier?: Yes. CVE-2024-9483 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-49971.
When was CVE-2024-9483 published?: CVE-2024-9483 was published on 2024-10-04 and last updated on 2026-06-17.

References

https://support.norton.com/sp/static/external/tools/security-advisories.html

Affected products (2)

cpe:2.3:a:avast:antivirus:*:*:*:*:*:macos:*:*
cpe:2.3:a:avg:antivirus:*:*:*:*:*:macos:*:*

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