Vulnerability details

CVE-2026-5204

Tenda CH22

Tenda CH22 Parameter webtypelibrary formWebTypeLibrary stack-based overflow

CVSS 4.0

8.7High

Official description

A vulnerability was determined in Tenda CH22 1.0.0.1. Affected is the function formWebTypeLibrary of the file /goform/webtypelibrary of the component Parameter Handler. This manipulation of the argument webSiteId causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized.

CVSS scores

Score	Version	Source	Vector
8.7High	4.0	CVEProject cvelistV5 (CNA) (VulDB)	`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`
8.8High	3.1	CVEProject cvelistV5 (CNA) (VulDB)	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R`
8.8High	3.0	CVEProject cvelistV5 (CNA) (VulDB)	`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R`
9.0High	2.0	CVEProject cvelistV5 (CNA) (VulDB)	`AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR`

Affected products

Vendor	Product	Versions	Source
Tenda	CH22	1.0.0.1	CVEProject cvelistV5 (CNA)

References and advisories

https://vuldb.com/vuln/354332 vdb-entrytechnical-description
https://vuldb.com/vuln/354332/cti signaturepermissions-required
https://vuldb.com/submit/780209 third-party-advisory
https://github.com/Litengzheng/vuldb_new/blob/main/CH22/vul_49/README.md exploit
https://www.tenda.com.cn/ product

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Details

Published: 2026-03-31
Last updated: 2026-03-31
State: Published
Assigner (CNA): VulDB

Exploit prediction (EPSS)

2.51%

Probability of exploitation in 30 days

84.8%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: Proof of concept
Technical impact: Total

Weaknesses (CWE)

CWE-121
Stack-based Buffer Overflow
CWE-119
Memory Corruption