CVE-2024-45520Network attack vector

Antivirus engine denial of service via PE32 scan

Published Dec 1, 2024 · Updated Dec 2, 2024

Denial of service in WithSecure Atlant 1.0.35-1 allows remote attackers to stop the antivirus engine by submitting a crafted PE32 file. The scanner corrupts memory while parsing the PE32 input, causing the antivirus engine to fail; WithSecure has not disclosed the affected parser or memory operation. A reachable scanning interface and acceptance of attacker-controlled file content are required, and the reported consequence is limited to interruption of antivirus scanning.

CVSS severity7.5
High
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in WithSecure Atlant 1.0.35-1 allows remote attackers to stop the antivirus engine by submitting a crafted PE32 file. The scanner corrupts memory while parsing the PE32 input, causing the antivirus engine to fail; WithSecure has not disclosed the affected parser or memory operation. A reachable scanning interface and acceptance of attacker-controlled file content are required, and the reported consequence is limited to interruption of antivirus scanning.

The record

CVE
CVE-2024-45520
Published
Dec 1, 2024
Updated
Dec 2, 2024
Vendor
WithSecure
Product
WithSecure Atlant
Classifications
CWE-125, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 1, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 2, 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?

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  1. Affected versionversion=1.0.35-1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WithSecure · WithSecure Atlantversion=1.0.35-1

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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