Vulnerability details
CVE-2026-2567
Wavlink WL-NU516U1
Wavlink WL-NU516U1 nas.cgi sub_401218 stack-based overflow
CVSS 4.0
8.6High
Official description
A vulnerability was detected in Wavlink WL-NU516U1 20251208. This vulnerability affects the function sub_401218 of the file /cgi-bin/nas.cgi. Performing a manipulation of the argument User1Passwd results in stack-based buffer overflow. The attack may be initiated remotely. The exploit is now public and may be used.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.6High | 4.0 | CVEProject cvelistV5 (CNA) (VulDB) | CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P |
| 7.2High | 3.1 | CVEProject cvelistV5 (CNA) (VulDB) | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R |
| 7.2High | 3.0 | CVEProject cvelistV5 (CNA) (VulDB) | CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R |
| 8.3High | 2.0 | CVEProject cvelistV5 (CNA) (VulDB) | AV:N/AC:L/Au:M/C:C/I:C/A:C/E:POC/RL:ND/RC:UR |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Wavlink | WL-NU516U1 | 20251208 | CVEProject cvelistV5 (CNA) |
References and advisories
4- https://vuldb.com/?id.346174 vdb-entrytechnical-description
- https://vuldb.com/?ctiid.346174 signaturepermissions-required
- https://vuldb.com/?submit.752016 third-party-advisory
- https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/nas.cgi_User1Passwd.md exploit
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Details
- Published
- 2026-02-16
- Last updated
- 2026-02-23
- State
- Published
- Assigner (CNA)
- VulDB
Exploit prediction (EPSS)
0.76%
Probability of exploitation in 30 days
55.7%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Total
Weaknesses (CWE)
- CWE-121Stack-based Buffer Overflow
- CWE-119Memory Corruption