EUVD-2026-19138
GHSA-cxp5-wp2v-64xx
CVSS Vector
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:X/V:X/RE:X/U:X
Lifecycle Timeline
4Description
A security flaw has been discovered in Tenda CH22 1.0.0.1. The impacted element is the function formCertLocalPrecreate of the file /goform/CertLocalPrecreate of the component Parameter Handler. Performing a manipulation of the argument standard results in stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks.
Analysis
Stack-based buffer overflow in Tenda CH22 router firmware version 1.0.0.1 allows authenticated remote attackers to execute arbitrary code via crafted 'standard' parameter to the formCertLocalPrecreate function in /goform/CertLocalPrecreate endpoint. Publicly available exploit code exists (GitHub), CVSS 7.4 (High), but no active exploitation confirmed (not in CISA KEV). …
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Remediation
Within 24 hours: Identify and inventory all Tenda CH22 routers running firmware version 1.0.0.1 in production; disable remote administrative access and restrict management interfaces to trusted networks only. Within 7 days: Contact Tenda for patched firmware availability and release timeline; implement network segmentation to isolate affected routers and limit lateral movement risk. …
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External POC / Exploit Code
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