Tex30lcd/s Firmware: Improper Authentication
CVE-2025-63207 is a critical-severity improper authentication vulnerability in Tex30lcd/s Firmware from Rvr, 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 Tex30lcd/s Firmware versions: texl-000400. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 7.4% chance of exploitation within 30 days, which is in the top 5.47% of all scored CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Check which version of Tex30lcd/s Firmware you run against the affected versions below, and install the vendor's latest release.
- 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 |
|---|---|---|---|
| Rvr | Tex30lcd/s Firmware | texl-000400 | Not stated |
| Rvr | Tex50lcd/s Firmware | texl-000400 | Not stated |
| Rvr | Tex100lcd/s Firmware | texl-000400 | Not stated |
| Rvr | Tex150lcd/s Firmware | texl-000400 | Not stated |
| Rvr | Tex300lcd Firmware | texl-000400 | Not stated |
| Rvr | Tex502lcd Firmware | texl-000400 | Not stated |
| Rvr | Tex702lcd Firmware | texl-000400 | Not stated |
| Rvr | Tex3500lcd Firmware | texl-000400 | Not stated |
| Rvr | Tex1002lcd Firmware | texl-000400 | Not stated |
| Rvr | Tex2000light Firmware | texl-000400 | Not stated |
| Rvr | Tex2500lcd Firmware | texl-000400 | Not stated |
Version data comes from NVD's product matching. 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 CISA (ADP).
Official description
The R.V.R Elettronica TEX product (firmware TEXL-000400, Web GUI TLAN-000400) is vulnerable to broken access control due to improper authentication checks on the /_Passwd.html endpoint. An attacker can send an unauthenticated POST request to change the Admin, Operator, and User passwords, resulting in complete system compromise.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Authentication
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
How developers prevent this class of flaw
- Use an authentication framework or library such as the OWASP ESAPI Authentication feature.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: poc, automatable: yes, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Technical write-ups (may include proof of concept)
- github.com/shiky8/my--cve-vulnerability-research/tree/main/CVE-2025-63207_RVR%20Elettronica%20TEX%20Broken%20…Exploit, Third Party Advisory
Other references
- rvr.it/en/Product
Recent Improper Authentication vulnerabilities
- 9.8 Critical severity
- 10.0 Critical severity
- 10.0 Critical severity
- 7.5 High severity
- 9.8 Critical severity
- 8.2 High severity
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