Vulnerability · CVE-2026-5204
A vulnerability was determined in Tenda CH22 1.0.0.1.
Published Mar 31, 2026 · catalog updated Jul 24, 2026 · ch22 firmware
Check if you run it
No confirmed exploitation is on record for CVE-2026-5204. EPSS is 1.01%. Act only if a listed version of ch22 firmware is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- High7.4
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 1.01%
- Remediation
- Advisory link
- Affected products
- cpe tenda/ch22 firmware
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.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- cpe tenda/ch22 firmware1.0.0.1
How to fix CVE-2026-5204
Recommended remediation
A patch or advisory reference is linked. Open the original publisher for availability by product version.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2026-5204. EPSS is 1.01%. Act only if a listed version of ch22 firmware is installed.
Which versions are affected?
Compare what you have installed with tenda/ch22 firmware 1.0.0.1. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
CWE-119: Buffer Overflow; CWE-121: Stack-based Buffer Overflow; CWE-787: Out-of-bounds Write. EPSS 1.01%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Mar 31, 2026 · NIST NVD
Detected
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.
Jul 24, 2026 · NIST NVD
Updated
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.
Sources
- CVE.orgVulnerability recordCVE-2026-5204
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-5204
30-day exploitation probability 1.0%
first.org - NIST NVDVulnerability recordCVE-2026-5204
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 rem
nvd.nist.gov
References
Freshness
Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.