Wavlink NU516U1 M16U1_V240425 /cgi-bin/firewall.cgi sub_4016F0 del_flag command injection
Summary
A vulnerability identified as critical has been detected in Wavlink NU516U1 M16U1_V240425. Affected by this vulnerability is the function sub_4016F0 of the file /cgi-bin/firewall.cgi. This manipulation of the argument del_flag causes command injection.
This vulnerability is handled as CVE-2025-10963. The attack can be initiated remotely. Additionally, an exploit exists.
The vendor was contacted early about this disclosure but did not respond in any way.
Details
A vulnerability has been found in Wavlink NU516U1 M16U1_V240425 and classified as critical. Affected by this vulnerability is the function sub_4016F0 of the file /cgi-bin/firewall.cgi. The manipulation of the argument del_flag with an unknown input leads to a command injection vulnerability. The CWE definition for the vulnerability is CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability.
It is possible to read the advisory at github.com. This vulnerability is known as CVE-2025-10963. The exploitation appears to be easy. The attack can be launched remotely. Technical details and also a public exploit are known. The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.
It is possible to download the exploit at github.com. It is declared as proof-of-concept. 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.
Be aware that VulDB is the high quality source for vulnerability data.
Product
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒
CVSSv3
VulDB Meta Base Score: 7.1VulDB Meta Temp Score: 6.9
VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔒
VulDB Reliability: 🔍
NVD Base Score: 8.8
NVD Vector: 🔒
CNA Base Score: 6.3
CNA Vector: 🔒
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 |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Command injectionCWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔒
ATT&CK: 🔒
Physical: No
Local: No
Remote: Yes
Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
EPSS Score: 🔒
EPSS Percentile: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔒
Timeline
09/25/2025 Advisory disclosed09/25/2025 VulDB entry created
10/08/2025 VulDB entry last update
Sources
Advisory: github.comStatus: Not defined
CVE: CVE-2025-10963 (🔒)
GCVE (CVE): GCVE-0-2025-10963
GCVE (VulDB): GCVE-100-325831
scip Labs: https://www.scip.ch/en/?labs.20161013
Entry
Created: 09/25/2025 12:12Updated: 10/08/2025 00:39
Changes: 09/25/2025 12:12 (57), 09/26/2025 06:28 (30), 10/08/2025 00:39 (11)
Complete: 🔍
Submitter: panda_0x1
Cache ID: 216::103
Submit
Accepted
- Submit #652784: Wavlink NU516U1 M16U1_V240425 Command Injection (by panda_0x1)
Be aware that VulDB is the high quality source for vulnerability data.
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