Tenda CH22 WriteFacMac FormWriteFacMac command injection
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-77.
Summary
A flaw has been found in Tenda CH22 1.0.0.1. The affected element is the function FormWriteFacMac of the file /goform/WriteFacMac. Executing a manipulation of the argument mac can lead to command injection. The attack may be launched remotely. The exploit has been published and may be used.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Tenda | CH22 | 1.0.0.1 | — | No fix listed | CNA |
- CH22 VendorTenda Affected 1.0.0.1 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-5153
- 2026-10-03 Alias added: GHSA-cg57-rmwp-qvm9
- 2026-10-25 EPSS moved to the 50th–90th percentile
References
More Tenda Ch22 Firmware vulnerabilities
- TI-2025-10464 Tenda CH22 SafeEmailFilter formSafeEmailFilter memory corruption CVSS 4.0CRITICAL 9.3
- TI-2025-10459 Tenda CH22 HTTP Request AdvSetWrlsafeset formWrlsafeset stack-based overflow CVSS 4.0CRITICAL 9.3
- TI-2024-30869 Tenda CH22 V1.0.0.6(468) has a stack overflow vulnerability located in the frmL7PlotForm function. CVSS 3.1CRITICAL 9.8
- TI-2024-30868 CH22 V1.0.0.6(468) has a stack overflow vulnerability located in the fromqossetting function. CVSS 3.1CRITICAL 9.8
- TI-2026-04913 Tenda CH22 WrlExtraSet formWrlExtraSet stack-based overflow CVSS 4.0HIGH 8.7
- TI-2026-04912 Tenda CH22 Parameter CertLocalPrecreate formCertLocalPrecreate stack-based overflow CVSS 4.0HIGH 8.7
Sources
- CVE-2026-5153 · CVE Program
- CVE-2026-5153 · NVD
- FIRST EPSS
- GHSA-cg57-rmwp-qvm9 · GitHub Advisory Database · CC BY 4.0
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