CVE-2023-40265Network attack vector

Authenticated code execution via dangerous file upload

Published Feb 8, 2024 · Updated May 15, 2025

File upload in Atos Unify OpenScape Xpressions WebAssistant V7 before V7R1 FR5 HF42 P911 allows remote authenticated users to execute code. WebAssistant accepts a dangerous uploaded file and permits execution as the web server user; the vendor has not disclosed the upload handler or validation failure. A valid account is required, and successful exploitation runs arbitrary code with the web server user's privileges.

CVSS severity8.8
High
EPSS probability0.92%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

File upload in Atos Unify OpenScape Xpressions WebAssistant V7 before V7R1 FR5 HF42 P911 allows remote authenticated users to execute code. WebAssistant accepts a dangerous uploaded file and permits execution as the web server user; the vendor has not disclosed the upload handler or validation failure. A valid account is required, and successful exploitation runs arbitrary code with the web server user's privileges.

The record

CVE
CVE-2023-40265
Published
Feb 8, 2024
Updated
May 15, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-434, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 8, 2024CVE publishedPublication date reported by the CVE source.
  2. May 15, 2025Record 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 vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

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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