CVE-2024-3300Public exploitNetwork attack vector

Pre-authentication code execution via EncryptedLogonInfo deserialization

Published May 30, 2024 · Updated Aug 1, 2024

Unsafe .NET deserialization in DELMIA Apriso Release 2019 through Release 2024 allows remote attackers to execute code before authentication. QueryLogin.aspx accepts EncryptedLogonInfo, decrypts it with a hardcoded key, and passes the result to BinaryFormatter before authentication checks run. A crafted HTTP request therefore executes code in the server process context without credentials.

CVSS severity9.0
Critical
EPSS probability2.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unsafe .NET deserialization in DELMIA Apriso Release 2019 through Release 2024 allows remote attackers to execute code before authentication. QueryLogin.aspx accepts EncryptedLogonInfo, decrypts it with a hardcoded key, and passes the result to BinaryFormatter before authentication checks run. A crafted HTTP request therefore executes code in the server process context without credentials.

The record

CVE
CVE-2024-3300
Published
May 30, 2024
Updated
Aug 1, 2024
Vendor
Dassault Systèmes
Product
DELMIA Apriso
Classifications
CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 30, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=release_2019_golden <=release_2019_sp5
  2. Affected versionversion=Release 2019 Golden <=Release 2019 SP5
  3. Affected versionversion=release_2020_golden <=release_2020_sp4
  4. Affected versionversion=Release 2020 Golden <=Release 2020 SP4
  5. Affected versionversion=release_2021_golden <=release_2021_sp3
  6. Affected versionversion=Release 2021 Golden <=Release 2021 SP3
  7. Affected versionversion=release_2022_golden <=release_2022_sp3
  8. Affected versionversion=Release 2022 Golden <=Release 2022 SP3
  9. Affected versionversion=release_2023_golden <=release_2023_sp2
  10. Affected versionversion=Release 2023 Golden <=Release 2023 SP2
  11. Affected versionversion=release_2024_golden <=release_2024_sp1
  12. Affected versionversion=Release 2024 Golden <=Release 2024 SP1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Dassault Systèmes · DELMIA Aprisoversion=release_2019_golden <=release_2019_sp5; version=Release 2019 Golden <=Release 2019 SP5; version=release_2020_golden <=release_2020_sp4; version=Release 2020 Golden <=Release 2020 SP4; version=release_2021_golden <=release_2021_sp3; version=Release 2021 Golden <=Release 2021 SP3; version=release_2022_golden <=release_2022_sp3; version=Release 2022 Golden <=Release 2022 SP3; version=release_2023_golden <=release_2023_sp2; version=Release 2023 Golden <=Release 2023 SP2; version=release_2024_golden <=release_2024_sp1; version=Release 2024 Golden <=Release 2024 SP1

Published CVSS scores

9.0Dassault SystèmesCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1190Exploit Public-Facing Application

Public exploit references

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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