AX8: Unrestricted Upload of File with Dangerous Type
CVE-2025-6266 is a critical-severity unrestricted upload of file with dangerous type vulnerability in AX8 from Teledyne FLIR, 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. Affected AX8 versions: 1.0; 1.1; 1.2, and others listed below. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.5% 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 Flir Ax8 Firmware to 1.49.16 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 |
|---|---|---|---|
| Teledyne FLIR | AX8 | 1.0; 1.1; 1.2; 1.3; 1.4; 1.5; 1.6; 1.7; and 32 more ranges | Not stated |
| Flir | Flir Ax8 Firmware | before 1.49.16 | 1.49.16 |
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 4.0 | 2.1 | Low | CNA (vuldb.com) |
| CVSS 3.1 | 6.3 | Medium | CNA (vuldb.com) |
| CVSS 3.1 | 9.8 | Critical | NVD |
| CVSS 2.0 | 6.5 | Medium | CNA (vuldb.com) |
Official description
A vulnerability was detected in Teledyne FLIR AX8 up to 1.46. Affected by this vulnerability is an unknown functionality of the file /upload.php. Performing manipulation of the argument File results in unrestricted upload. It is possible to initiate the attack remotely. The exploit is now public and may be used. Upgrading to version 1.49.16 addresses this issue. Upgrading the affected component is recommended. The vendor points out: "FLIR AX8 internal web site has been refactored to be able to handle the reported vulnerabilities."
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Unrestricted Upload of File with Dangerous Type
The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.
How developers prevent this class of flaw
- Generate a new, unique filename for an uploaded file instead of using the user-supplied filename, so that no external input is used at all.
- When the set of acceptable objects, such as filenames or URLs, is limited or known, create a mapping from a set of fixed input values (such as numeric IDs) to the actual filenames or URLs, and reject all other inputs.
- Consider storing the uploaded files outside of the web document root entirely. Then, use other mechanisms to deliver the files dynamically.
More Unrestricted Upload of File with Dangerous Type vulnerabilities (CWE-434)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: poc, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- vuldb.com/?id.313270Third Party Advisory, VDB Entry
- vuldb.com/?submit.586692Third Party Advisory, VDB Entry
Technical write-ups (may include proof of concept)
- github.com/YZS17/CVE/blob/main/FLIR-AX8/Unauthority_file_upload_vulnerabililty.mdExploit, Third Party Advisory
Other references
- vuldb.com/?ctiid.313270Permissions Required, VDB Entry
Other vulnerabilities in AX8
- 8.8 High severity
- 8.8 High severity
- 9.8 Critical severity
Recent Unrestricted Upload of File with Dangerous Type vulnerabilities
- 7.2 High severity
- 7.2 High severity
- 7.2 High severity
- 8.8 High severity
- 8.8 High severity
- 7.5 High severity
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