FXA5000: Relative Path Traversal
CVE-2026-82765 is a high-severity relative path traversal vulnerability in FXA5000 from Contec, with a CVSS 3.1 base score of 8.1 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. The record lists version 1.12.00 as the first without the flaw, so updating FXA5000 to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.49% 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
- Update FXA5000 to 1.12.00 or a later version.
- Update FXA5020 to 1.12.00 or a later version.
- Update FXE5000 to 1.12.00 or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Contec | FXA5000 | before 1.12.00 | 1.12.00 |
| Contec | FXA5020 | before 1.12.00 | 1.12.00 |
| Contec | FXE5000 | before 1.12.00 | 1.12.00 |
| Contec | FXS5000-[][] | before 1.12.00 | 1.12.00 |
| Contec | FXS5021 | before 1.12.00 | 1.12.00 |
| Contec | FXE4000 | before 1.14.00 | 1.14.00 |
| Contec | FXE4000-WP | before 1.14.00 | 1.14.00 |
| Contec | FXS4000 | before 1.14.00 | 1.14.00 |
| Contec | FXS4020 | before 1.14.00 | 1.14.00 |
| Contec | FXA3000 | before 1.20.00 | 1.20.00 |
| Contec | FXA3020 | before 1.20.00 | 1.20.00 |
| Contec | FXA3200 | before 1.20.00 | 1.20.00 |
| Contec | FXE3000 | before 1.20.00 | 1.20.00 |
| Contec | FXE3000-WP | before 1.20.00 | 1.20.00 |
| Contec | FXS300[]-CN | before 1.20.00 | 1.20.00 |
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
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N. Scored by CNA (jpcert.or.jp).
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 8.6 | High | CNA (jpcert.or.jp) |
| CVSS 3.1 | 8.1 | High | CNA (jpcert.or.jp) |
Official description
Path traversal vulnerability exists in Contec FX5000 series, FX4000 series, and FX3000 series. If this vulnerability is exploited, arbitrary files on the server may be viewed and/or altered by an attacker who can access the product via FTP.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Relative Path Traversal
The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as.. that can resolve to a location that is outside of that directory.
How developers prevent this class of flaw
- Use an application firewall that can detect attacks against this weakness. It can be beneficial in cases in which the code cannot be fixed (because it is controlled by a third party), as an emergency prevention measure while more comprehensive software assurance measures are applied, or to provide defense in depth.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other references
Other vulnerabilities in FXA5000
- 8.8 High severity
Recent Relative Path Traversal vulnerabilities
- 9.8 Critical severity
- 8.1 High severity
- 7.1 High severity
- 9.1 Critical severity
- 7.7 High severity
- 8.6 High severity
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