High severity · published Apr 9, 2026
CVE-2026-5830
Tenda AC15 SysToolChangePwd websGetVar stack-based overflow
8.8
CVSS
0.6%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 50% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AC
AC15 · Tenda
15.03.05.18 · source: vendor
AF
Ac15 Firmware · Tenda
15.03.05.18 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-5830
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-5830
Exploit
https://files.catbox.moe/xrk8jb.zip
Third Party Advisory
https://vuldb.com/submit/789178
Third Party Advisory
https://vuldb.com/vuln/356277
Permissions Required
https://vuldb.com/vuln/356277/cti
Product
https://www.tenda.com.cn/
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