WNR614: Improper Authentication
CVE-2025-5495 is a critical-severity improper authentication vulnerability in WNR614 from NETGEAR, 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 WNR614 versions: 1.1.0.28_1.0.1WW. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 1.04% chance of exploitation within 30 days, higher than 64% of scored CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Check which version of WNR614 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 |
|---|---|---|---|
| NETGEAR | WNR614 | 1.1.0.28_1.0.1WW | Not stated |
| NETGEAR | Wnr614 Firmware | 1.1.0.28 | Not stated |
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 | 6.9 | Medium | CNA (vuldb.com) |
| CVSS 3.1 | 7.3 | High | CNA (vuldb.com) |
| CVSS 3.1 | 9.8 | Critical | NVD |
| CVSS 2.0 | 7.5 | High | CNA (vuldb.com) |
Official description
A vulnerability was found in Netgear WNR614 1.1.0.28_1.0.1WW. It has been classified as critical. This affects an unknown part of the component URL Handler. The manipulation with the input %00currentsetting.htm leads to improper authentication. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. This issue appears to have been circulating as an 0day since 2024.
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: partial).
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- vuldb.com/?id.310911Third Party Advisory, VDB Entry
- vuldb.com/?submit.584939Third Party Advisory, VDB Entry
Technical write-ups (may include proof of concept)
- github.com/Shuanunio/CVE_Requests/blob/main/Netgear/WNR614/ACL%20bypass%20Vulnerability%20in%20Netgear%20WNR6…Exploit, Third Party Advisory
Other references
- vuldb.com/?ctiid.310911Permissions Required, VDB Entry
- netgear.com/Product
Recent Improper Authentication vulnerabilities
- 9.8 Critical severity
- 9.8 Critical severity
- 7.3 High severity
- 8.1 High severity
- 9.8 Critical severity
- 9.8 Critical severity
Spotted an error? Tell us.