RCE in Wavlink Wl-Nu516u1
CVE-2026-15513
A security flaw has been discovered in Wavlink WL-NU516U1 260515. This affects the function wlink_uci_set_value of the file /cgi-bin/adm.cgi. Performing a manipulation of the argument lan_ip results in os command injection. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. You should upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.018 (78.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 78.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
- Wavlink Wl-Nu516u1 — versions 260515
Weakness classification (CWE)
References
- vuldb.com/vuln/377842 (technical-description, vdb-entry)
- vuldb.com/vuln/377842/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-15513 (third-party-advisory)
- vuldb.com/submit/847517 (third-party-advisory)
- github.com/0xcc12138/wavlink-nu516u1-csrf-command-injection- (exploit)
- dl.wavlink.com/firmware/RD/WINSTAR_NU516U1-WO-A-2026-06-22-5ccde97-mt7628-squas… (patch)
Frequently asked questions
- What is CVE-2026-15513?
- CVE-2026-15513 is a medium-severity vulnerability in Wavlink Wl-Nu516u1, classified under Command Injection. CVSS score: 6.3/10. Published 2026-07-13.
- How severe is CVE-2026-15513?
- Medium severity. CVSS v3 base score is 6.3 out of 10.