CVE-2026-6632Network attack vector

Authenticated code execution via filter buffer overflow

Published Apr 20, 2026 · Updated Apr 20, 2026

Buffer overflow in F451 httpd 1.0.0.7_cn_svn7958 allows remote authenticated users to corrupt memory via a crafted filter request. The fromSafeClientFilter handler accepts attacker-controlled menufacturer or Go values at /goform/SafeClientFilter and writes beyond an intended buffer boundary. Low-privileged web-interface access is required; successful exploitation can execute attacker-controlled code or crash the httpd service.

CVSS severity8.8
High
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in F451 httpd 1.0.0.7_cn_svn7958 allows remote authenticated users to corrupt memory via a crafted filter request. The fromSafeClientFilter handler accepts attacker-controlled menufacturer or Go values at /goform/SafeClientFilter and writes beyond an intended buffer boundary. Low-privileged web-interface access is required; successful exploitation can execute attacker-controlled code or crash the httpd service.

The record

CVE
CVE-2026-6632
Published
Apr 20, 2026
Updated
Apr 20, 2026
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
F451
Classifications
CWE-119, CWE-120, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.0.7_cn_svn7958

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · F451version=1.0.0.7_cn_svn7958

Published CVSS scores

7.4VulDBCVSS: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
8.8VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0VulDBAV:N/AC:L/Au:S/C:C/I:C/A:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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