MOVEit Transfer: Path Equivalence: 'filename ' (Trailing Space)
CVE-2026-8801 is a critical-severity path equivalence: 'filename ' (trailing space) vulnerability in MOVEit Transfer from Progress Software, with a CVSS 3.1 base score of 9.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists versions 2025.1.4, 2025.0.8 as the first without the flaw, so updating MOVEit Transfer to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.55% chance of exploitation within 30 days, which is low compared with other CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update MOVEit Transfer to 2025.1.4 or 2025.0.8, whichever matches your release line, or a later version.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Progress Software | MOVEit Transfer | 2025.1.0 up to, but not including, 2025.1.4; before 2025.0.8 | 2025.1.4, 2025.0.8 |
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
- NoneNo account or login is needed.
- 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:N/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 3.5 | Low | CNA (progress.com) |
| CVSS 3.1 | 9.8 | Critical | NVD |
Official description
Path equivalence: vulnerability in Progress MOVEit Transfer (File Upload modules). This issue affects MOVEit Transfer: before 2025.0.8, from 2025.1.0 before 2025.1.4.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Path Equivalence: 'filename ' (Trailing Space)
The product accepts path input in the form of trailing space ('filedir ') without appropriate validation, which can lead to ambiguous path resolution and allow an attacker to traverse the file system to unintended locations or access arbitrary files.
More Path Equivalence: 'filename ' (Trailing Space) vulnerabilities (CWE-46)
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
Patches and release notes
Other vulnerabilities in MOVEit Transfer
- 8.8 High severity
- 8.8 High severity
- 7.3 High severity
- 8.8 High severity
- 9.8 Critical severity
- 8.8 High severity
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