Aspera Faspex: Modification of Assumed-Immutable Data (MAID)
CVE-2025-33136 is a high-severity modification of assumed-immutable data (MAID) vulnerability in Aspera Faspex from IBM, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. Affected Aspera Faspex versions: 5.0.0 through 5.0.12. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.36% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Aspera Faspex you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on ibm.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| IBM | Aspera Faspex | 5.0.0 through 5.0.12 | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.1 | High | CNA (us.ibm.com) |
| CVSS 3.1 | 8.8 | High | NVD |
Official description
IBM Aspera Faspex 5.0.0 through 5.0.12 could allow an authenticated user to obtain sensitive information or perform unauthorized actions on behalf of another user due to improper protection of assumed immutable data.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Modification of Assumed-Immutable Data (MAID)
The product does not properly protect an assumed-immutable element from being modified by an attacker.
How developers prevent this class of flaw
- When the data is stored or transmitted through untrusted sources that could modify the data, implement integrity checks to detect unauthorized modification, or store/transmit the data in a trusted location that is free from external influence.
More Modification of Assumed-Immutable Data (MAID) vulnerabilities (CWE-471)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Advisories
Other vulnerabilities in Aspera Faspex
- 9.8 Critical severity
- 8.8 High severity
- 9.8 Critical severity
- 9.8 Critical severity
- 7.8 High severity
- 7.5 High severity
Recent Modification of Assumed-Immutable Data (MAID) vulnerabilities
- 7.3 High severity
- 8.3 High severity
- 7.3 High severity
- 9.8 Critical severity
- 8.4 High severity
Spotted an error? Tell us.