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Vulnerability record · CVE-2026-5830 · published 9 April 2026

CVE-2026-5830: Tenda ac15 firmware memory buffer overflow vulnerability

Tenda · Ac15 Firmware

A vulnerability was identified in Tenda AC15 15.03.05.18. This affects the function websGetVar of the file /goform/SysToolChangePwd. Such manipulation of the argument oldPwd/newPwd/cfmPwd leads to stack-based buffer overflow. The attack can be executed remotely. The exploit is publicly available and might be used.

7.4 CVSS 4.0 High EPSS 1.0% · top 38.7% CWE-119 · Memory buffer overflowCWE-121 · Stack-based buffer overflow
7.4CVSS 4.0 base score, v2 9.0
1.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References, 1 tagged exploit
24 Jul 2026Last modified by NVD

Description

A vulnerability was identified in Tenda AC15 15.03.05.18. This affects the function websGetVar of the file /goform/SysToolChangePwd. Such manipulation of the argument oldPwd/newPwd/cfmPwd leads to stack-based buffer overflow. The attack can be executed remotely. The exploit is publicly available and might be used.

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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://files.catbox.moe/xrk8jb.zip Exploit
https://vuldb.com/submit/789178 Third Party AdvisoryVDB Entry
https://vuldb.com/vuln/356277 Third Party AdvisoryVDB Entry
https://vuldb.com/vuln/356277/cti Permissions RequiredVDB Entry
https://www.tenda.com.cn/ Product

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2020-10987Tenda AC15 router command injection in goform/setUsbUnloadThe goform/setUsbUnload endpoint of Tenda AC15 AC1900 firmware 15.03.05.19 passes the deviceName POST parameter to a system command without sanitizat…KEVEPSS 80%analysed9.8CVE-2026-24103Tenda ac15 firmware classic buffer overflow vulnerabilityA buffer overflow vulnerability was discovered in goform/formSetMacFilterCfg in Tenda AC15V1.0 V15.03.05.18_multi.EPSS 0.43%9.8CVE-2026-24105Tenda ac15 firmware code injection vulnerabilityAn issue was discovered in goform/formsetUsbUnload in Tenda AC15V1.0 V15.03.05.18_multi. The value of `v1` was not checked, potentially leading to a …EPSS 1.7%9.8CVE-2026-24101Tenda ac15 firmware os command injection vulnerabilityAn issue was discovered in goform/formSetIptv in Tenda AC15V1.0 V15.03.05.18_multi. When the condition is met, `s1_1` will be passed into sub_B0488, …EPSS 1.7%9.8CVE-2025-63666Tenda ac15 firmware improper access control vulnerabilityTenda AC15 v15.03.05.18_multi) issues an authentication cookie that exposes the account password hash to the client and uses a short, low-entropy suf…EPSS 0.47%9.8CVE-2025-29462Tenda ac15 firmware classic buffer overflow vulnerabilityA buffer overflow vulnerability has been discovered in Tenda Ac15 V15.13.07.13. The vulnerability occurs when the webCgiGetUploadFile function calls …EPSS 0.55%9.8CVE-2025-25632Tenda ac15 firmware command injection vulnerabilityTenda AC15 v15.03.05.19 is vulnerable to Command Injection via the handler function in /goform/telnet.EPSS 1.7%9.8CVE-2023-36103Tenda ac15 firmware command injection vulnerabilityCommand Injection vulnerability in goform/SetIPTVCfg interface of Tenda AC15 V15.03.05.20 allows remote attackers to run arbitrary commands via craft…EPSS 1.4%

Source: NIST National Vulnerability Database (record CVE-2026-5830), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.