CVE-2023-27874Network attack vector

Authenticated command execution via crafted XML processing

Published Mar 21, 2023 · Updated Feb 26, 2025

XXE in IBM Aspera Faspex 4.4.2 allows remote authenticated users to execute arbitrary commands through crafted XML data. IBM has not disclosed the XML-processing component or the operation that turns an external-entity reference into command execution. Exploitation requires a valid Faspex account and can run attacker-chosen commands in the server environment.

CVSS severity9.9
Critical
EPSS probability1.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XXE in IBM Aspera Faspex 4.4.2 allows remote authenticated users to execute arbitrary commands through crafted XML data. IBM has not disclosed the XML-processing component or the operation that turns an external-entity reference into command execution. Exploitation requires a valid Faspex account and can run attacker-chosen commands in the server environment.

The record

CVE
CVE-2023-27874
Published
Mar 21, 2023
Updated
Feb 26, 2025
Vendor
IBM
Product
IBM Aspera Faspex
Classifications
CWE-611, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 21, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 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?

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

  1. Affected versionversion=4.4.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · IBM Aspera Faspexversion=4.4.2

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.9IBM CorporationCVSS:3.0/AV:N/AC:L/PR:L/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 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-611Improper Restriction of XML External Entity Reference
T1059Command and Scripting Interpreter

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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