CVE-2026-3715

Name: CVE-2026-3715
Creator: NVD / NIST
Published: 2026-03-08T07:16:13.543+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.4/10EPSS 0.66%

Last modified Jun 17, 2026

CVE-2026-3715 is a high-severity vulnerability rated 7.4/10 on the CVSS scale. A vulnerability was found in Wavlink WL-WN579X3-C 231124. This affects the function sub_40139C of the file /cgi-bin/firewall.cgi. EPSS estimates a 0.66% chance of exploitation in the next 30 days.

Description

A vulnerability was found in Wavlink WL-WN579X3-C 231124. This affects the function sub_40139C of the file /cgi-bin/firewall.cgi. Performing a manipulation of the argument del_flag results in stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been made public and could be used. Upgrading to version 20260226 is able to mitigate this issue. 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.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS 4.0

7.4/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.66%

46.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Wavlink	Wl-Wn579x3-C Firmware	231124

References

https://dl.wavlink.com/firmware/RD/WN579X3C_WAVLINK_V20260226_WO_cb3003b2.binBroken Link
https://github.com/Litengzheng/vul_db/blob/main/WL-WN579X3-C/vul_17/README.mdExploit, Third Party Advisory
https://vuldb.com/?ctiid.349660Permissions Required, VDB Entry
https://vuldb.com/?id.349660Third Party Advisory, VDB Entry
https://vuldb.com/?submit.765325Third Party Advisory, VDB Entry

Timeline

Published: Mar 8, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-3715?

How severe is CVE-2026-3715?

CVE-2026-3715 has a CVSS score of 7.4/10 (HIGH severity). The EPSS model estimates a 0.66% probability of exploitation in the next 30 days.

How do I fix CVE-2026-3715?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-3715?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST