Netgear JWNR2000v2 1.0.0.11 sub_4238E8 host buffer overflow
Summary
A vulnerability classified as critical was found in Netgear JWNR2000v2 1.0.0.11. This affects the function sub_4238E8. The manipulation of the argument host results in buffer overflow.
This vulnerability is known as CVE-2025-4120. It is possible to launch the attack remotely. No exploit is available.
The vendor was contacted early about this disclosure but did not respond in any way.
Details
A vulnerability was found in Netgear JWNR2000v2 1.0.0.11. It has been classified as critical. Affected is the function sub_4238E8. The manipulation of the argument host with an unknown input leads to a buffer overflow vulnerability. CWE is classifying the issue as CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. This is going to have an impact on confidentiality, integrity, and availability.
The advisory is shared for download at github.com. This vulnerability is traded as CVE-2025-4120. The exploitability is told to be easy. It is possible to launch the attack remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 04/30/2025).
The vendor was contacted early about this disclosure but did not respond in any way.
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Product
Vendor
Name
Version
License
Website
- Vendor: https://www.netgear.com/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 8.8VulDB Meta Temp Score: 8.5
VulDB Base Score: 8.8
VulDB Temp Score: 8.5
VulDB Vector: 🔒
VulDB Reliability: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Buffer overflowCWE: CWE-120 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒
Physical: No
Local: No
Remote: Yes
Availability: 🔒
Status: Not defined
EPSS Score: 🔒
EPSS Percentile: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒
| 0-Day | Unlock | Unlock | Unlock | Unlock |
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| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔒
Timeline
04/30/2025 Advisory disclosed04/30/2025 VulDB entry created
04/30/2025 VulDB entry last update
Sources
Vendor: netgear.comAdvisory: github.com
Status: Not defined
CVE: CVE-2025-4120 (🔒)
GCVE (CVE): GCVE-0-2025-4120
GCVE (VulDB): GCVE-100-306600
Entry
Created: 04/30/2025 07:17Changes: 04/30/2025 07:17 (53)
Complete: 🔍
Submitter: yummysoup2
Cache ID: 216::103
Submit
Accepted
- Submit #560774: Netgear JWNR2000v2 1.0.0.11 Buffer Overflow (by yummysoup2)
VulDB is the best source for vulnerability data and more expert information about this specific topic.
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