CVE-2026-3715 Details
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.
A stack-based buffer overflow vulnerability has been identified in the Wavlink WL-WN579X3-C router, specifically in version 231124. The issue arises in the function sub_40139C within the file /cgi-bin/firewall.cgi. The vulnerability can be exploited remotely by manipulating the del_flag argument, leading to unauthorized memory access and potential code execution.
Users are advised to upgrade to Wavlink WL-WN579X3-C version 20260226, which addresses this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 11, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://dl.wavlink.com/firmware/RD/WN579X3C_WAVLINK_V20260226_WO_cb3003b2.bin | [email protected] | Broken Link |
| https://github.com/Litengzheng/vul_db/blob/main/WL-WN579X3-C/vul_17/README.md | [email protected] | ExploitThird Party Advisory |
| https://vuldb.com/?ctiid.349660 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.349660 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.765325 | [email protected] | Third Party AdvisoryVDB Entry |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | [email protected] |
| CWE-121 | Stack-based Buffer Overflow | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| wavlink wl-wn579x3-c firmware | 231124 |
CPE
Remediation
| |
| wavlink wl-wn579x3-c | All versions |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 10, 2026 | Initial Analysis | [email protected] |
| Mar 8, 2026 | New CVE Received | [email protected] |