Iwr 3000n Firmware: Exposure of Sensitive Information to an Unauthorized Actor
CVE-2025-55976 is a high-severity exposure of sensitive information to an unauthorized actor vulnerability in Iwr 3000n Firmware from Intelbras, with a CVSS 3.1 base score of 8.4 out of 10. It can be exploited with local access to the system by an unauthenticated attacker, without any action from a user. Affected Iwr 3000n Firmware versions: 1.9.8 and earlier. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 3.56% chance of exploitation within 30 days, higher than 90% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Iwr 3000n Firmware you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Intelbras | Iwr 3000n Firmware | 1.9.8 and earlier | 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
- LocalThe attacker needs local access or must trick a user into running something.
- 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:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by CISA (ADP).
Official description
Intelbras IWR 3000N 1.9.8 exposes the Wi-Fi password in plaintext via the /api/wireless endpoint. Any unauthenticated user on the local network can directly obtain the Wi-Fi network password by querying this endpoint.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Exposure of Sensitive Information to an Unauthorized Actor
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
How developers prevent this class of flaw
- Compartmentalize the system to have safe areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area. Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
More Exposure of Sensitive Information to an Unauthorized Actor vulnerabilities (CWE-200)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: poc, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Technical write-ups (may include proof of concept)
- medium.com/@windsormoreira/intelbras-iwr-3000n-unauthenticated-wi-fi-password-disclosure-cve-2025-55976-7cdac…Exploit, Third Party Advisory
Recent Exposure of Sensitive Information to an Unauthorized Actor vulnerabilities
- 8.7 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 9.9 Critical severity
- 7.5 High severity
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