CVE-2023-33675Public exploitNetwork attack vector

Router crash via oversized parental-control time value

Published Jun 2, 2023 · Updated Jan 8, 2025

Stack-based buffer overflow in Tenda AC8 firmware 16.03.34.06 allows remote attackers to crash the router with a crafted HTTP request. The get_parentControl_list_Info function accepts an overlong time parameter at /goform/saveParentControlInfo and writes past stack storage because the value lacks an enforced length bound. No authentication or user interaction is required; the published proof of concept demonstrates a service crash, while code execution for this function is not established.

CVSS severity9.8
Critical
EPSS probability1.21%
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 Tenda AC8 firmware 16.03.34.06 allows remote attackers to crash the router with a crafted HTTP request. The get_parentControl_list_Info function accepts an overlong time parameter at /goform/saveParentControlInfo and writes past stack storage because the value lacks an enforced length bound. No authentication or user interaction is required; the published proof of concept demonstrates a service crash, while code execution for this function is not established.

The record

CVE
CVE-2023-33675
Published
Jun 2, 2023
Updated
Jan 8, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 2, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 8, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8CISA-ADPCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1499.004Application or System Exploitation

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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