VulnerabilityAnalyzed

CVE-2026-5204

A vulnerability was determined in Tenda CH22 1.0.0.1.

HIGH 7.4EPSS 2.48%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (2.48%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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 4.0: 7.4 HIGHCVSS: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/M
EPSS: 2.48% probability · 84th percentile
CISA KEV: Not listed
Weakness: CWE-119, CWE-121, CWE-787
Affected: tenda/ch22 firmware
Source: cna@vuldb.com

References

https://github.com/Litengzheng/vuldb_new/blob/main/CH22/vul_49/README.mdExploit, Third Party Advisory
https://vuldb.com/submit/780209Third Party Advisory, VDB Entry
https://vuldb.com/vuln/354332Third Party Advisory, VDB Entry
https://vuldb.com/vuln/354332/ctiPermissions Required, VDB Entry
https://www.tenda.com.cn/Product

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.