Wavlink AC3000 M33A8.V5030.210505 nas.cgi set_nas ftp_max_sessions external control of setting
| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 7.8 | $0-$5k | 0.00 |
Summary
A vulnerability classified as critical was found in Wavlink AC3000 M33A8.V5030.210505. This issue affects the function set_nas of the file nas.cgi. Executing a manipulation of the argument ftp_max_sessions can lead to external control of setting.
This vulnerability is tracked as CVE-2024-39795. The attack can be launched remotely. No exploit exists.
Details
A vulnerability classified as critical was found in Wavlink AC3000 M33A8.V5030.210505. This vulnerability affects the function set_nas of the file nas.cgi. The manipulation of the argument ftp_max_sessions with an unknown input leads to a external control of setting vulnerability. The CWE definition for the vulnerability is CWE-15. One or more system settings or configuration elements can be externally controlled by a user. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:
Multiple external config control vulnerabilities exist in the nas.cgi set_nas() proftpd functionality of Wavlink AC3000 M33A8.V5030.210505. A specially crafted HTTP request can lead to permission bypass. An attacker can make an authenticated HTTP request to trigger these vulnerabilities.A configuration injection vulnerability exists in the `ftp_max_sessions` POST parameter.
The advisory is shared for download at talosintelligence.com. This vulnerability was named CVE-2024-39795 since 06/28/2024. The exploitation appears to be easy. The attack can be initiated remotely. Additional levels of successful authentication are required for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/22/2025).
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
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Product
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 7.8VulDB Meta Temp Score: 7.8
VulDB Base Score: 7.2
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.2
NVD Vector: 🔍
CNA Base Score: 9.1
CNA Vector (talos): 🔍
CVSSv2
| AV | AC | Au | C | I | A |
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| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: External control of settingCWE: CWE-15
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 |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔍
Timeline
06/28/2024 🔍01/14/2025 🔍
01/14/2025 🔍
08/22/2025 🔍
Sources
Advisory: TALOS-2024-2053Status: Not defined
CVE: CVE-2024-39795 (🔍)
GCVE (CVE): GCVE-0-2024-39795
GCVE (VulDB): GCVE-100-291592
Entry
Created: 01/14/2025 16:04Updated: 08/22/2025 21:35
Changes: 01/14/2025 16:04 (64), 08/22/2025 21:35 (12)
Complete: 🔍
Cache ID: 216::103
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