CVE-2024-9481

Application crash via malformed EML engine write

Published Oct 4, 2024 · Updated Oct 7, 2024

Out-of-bounds write in AVG/Avast Antivirus definitions before 24092400 allows local users to crash the macOS application with a malformed EML file. The engine module writes outside its intended buffer while processing the malformed EML. Triggering requires local file processing; the published impact is an application crash without confidentiality or integrity loss.

CVSS severity5.5
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in AVG/Avast Antivirus definitions before 24092400 allows local users to crash the macOS application with a malformed EML file. The engine module writes outside its intended buffer while processing the malformed EML. Triggering requires local file processing; the published impact is an application crash without confidentiality or integrity loss.

The record

CVE
CVE-2024-9481
Published
Oct 4, 2024
Updated
Oct 7, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1499
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 4, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 7, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.1NortonLifeLock Inc.CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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