CVE-2026-6632 (GCVE-0-2026-6632)

Vulnerability from cvelistv5 – Published: 2026-04-20 11:00 – Updated: 2026-04-20 15:05
VLAI
Title
Tenda F451 httpd SafeClientFilter fromSafeClientFilter buffer overflow
Summary
A vulnerability was identified in Tenda F451 1.0.0.7_cn_svn7958. The affected element is the function fromSafeClientFilter of the file /goform/SafeClientFilter of the component httpd. The manipulation of the argument menufacturer/Go leads to buffer overflow. Remote exploitation of the attack is possible. The exploit is publicly available and might be used.
Severity
8.7 (High)
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
8.8 (High)
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
8.8 (High)
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
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-20 15:04 UTC
CWE
Assigner
VulDB CNA under the mitre root
CNA scorecard B 83/100 over 3816 records in the last 180 days details
References
URL Tags
https://vuldb.com/vuln/358266 vdb-entrytechnical-description
https://vuldb.com/vuln/358266/cti signaturepermissions-required
https://vuldb.com/submit/792905 third-party-advisory
https://github.com/Jimi-Lab/cve/issues/26 exploitissue-tracking
https://www.tenda.com.cn/ product
Impacted products
Vendor Product Version CPE status
Tenda F451 Affected: 1.0.0.7_cn_svn7958
    cpe:2.3:o:tenda:f451_firmware:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
jimi666 (VulDB User)
Show details on NVD website
To clipboard 

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How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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