CVE-2026-13538
A vulnerability was determined in Wavlink WL-NU516U1-A M16U1_V240425.
Does this matter?
Lower severity and a low EPSS score (2.18%). Track it; it rarely justifies an emergency change on its own.
Description
A vulnerability was determined in Wavlink WL-NU516U1-A M16U1_V240425. The affected element is the function sub_401D68 of the file /cgi-bin/wireless.cgi of the component POST Parameter Handler. This manipulation of the argument SSID2G2/SSID5G2/AuthMethod2/WPAPSK12 causes command injection. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized. The affected component should be upgraded. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
- CVSS 4.0
- 2.1 LOWCVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 2.18% probability · 81th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-74, CWE-77
- Source
- cna@vuldb.com
References
- https://dl.wavlink.com/firmware/RD/WINSTAR_NU516U1-WO-A-2026-06-22-5ccde97-mt7628-squashfs-sysupgrade.bin
- https://github.com/Svigo-o/Wavlink_vul/tree/main/wavlink-wl-nu516u1-wireless-multissid-ssid2g2-command-injection
- https://github.com/Svigo-o/Wavlink_vul/tree/main/wavlink-wl-nu516u1-wireless-multissid-ssid5g2-command-injection
- https://vuldb.com/cve/CVE-2026-13538
- https://vuldb.com/submit/834019
- https://vuldb.com/submit/834021
- https://vuldb.com/submit/834022
- https://vuldb.com/submit/834023
- https://vuldb.com/vuln/374546
- https://vuldb.com/vuln/374546/cti
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.