CVE-2025-33136Network attack vector

Authenticated data disclosure via mutable trusted fields

Published May 22, 2025 · Updated Aug 26, 2025

Improper protection of assumed-immutable data in IBM Aspera Faspex 5.0.0 through 5.0.12 allows remote authenticated users to obtain sensitive data. Faspex permits an authenticated user to modify security-relevant data that the application treats as immutable; IBM has not disclosed the affected field or code path. Network access and low-privileged credentials are required; the cross-user impact includes data disclosure and unauthorized actions without service interruption.

CVSS severity7.1
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper protection of assumed-immutable data in IBM Aspera Faspex 5.0.0 through 5.0.12 allows remote authenticated users to obtain sensitive data. Faspex permits an authenticated user to modify security-relevant data that the application treats as immutable; IBM has not disclosed the affected field or code path. Network access and low-privileged credentials are required; the cross-user impact includes data disclosure and unauthorized actions without service interruption.

The record

CVE
CVE-2025-33136
Published
May 22, 2025
Updated
Aug 26, 2025
Vendor
IBM
Product
IBM Aspera Faspex
Classifications
CWE-471, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 22, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 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=5.0.0 <=5.0.12

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · IBM Aspera Faspexversion=5.0.0 <=5.0.12

Published CVSS scores

7.1IBMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
8.8NIST NVDCVSS: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-471Modification of Assumed-Immutable Data (MAID)
T1565.001Stored Data Manipulation

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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