CVE-2024-7439Public exploitNetwork attack vector

Remote code execution via Content-Length overflow

Published Aug 3, 2024 · Updated Aug 5, 2024

Stack-based buffer overflow in CC8160 VVTK-0100d httpd allows remote authenticated users to execute code via a crafted Content-Length header. The httpd read function trusts the attacker-controlled Content-Length value when copying request data into a fixed-size stack buffer, allowing the buffer to be overwritten. A valid low-privilege session is required; successful exploitation can execute code or crash the end-of-life camera.

CVSS severity9.8
Critical
EPSS probability1.03%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in CC8160 VVTK-0100d httpd allows remote authenticated users to execute code via a crafted Content-Length header. The httpd read function trusts the attacker-controlled Content-Length value when copying request data into a fixed-size stack buffer, allowing the buffer to be overwritten. A valid low-privilege session is required; successful exploitation can execute code or crash the end-of-life camera.

The record

CVE
CVE-2024-7439
Published
Aug 3, 2024
Updated
Aug 5, 2024
Vendor
VIVOTEK
Product
CC8160
Classifications
CWE-119, CWE-121, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record 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=VVTK-0100d

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

VIVOTEK · CC8160version=VVTK-0100d

Published CVSS scores

8.7VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.0VulDBAV:N/AC:L/Au:S/C:C/I:C/A:C
8.8VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 exploitPublished

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-121Stack-based Buffer Overflow
T1190Exploit Public-Facing Application

Public exploit references

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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