CVE-2024-53621Public exploitNetwork attack vector

Service interruption via unbounded funcpara1 copy

Published Jun 30, 2025 · Updated Jun 30, 2025

Stack-based buffer overflow in Tenda AC1206 firmware 15.03.06.23 allows remote attackers to interrupt service via a crafted POST request. In /bin/httpd, formSetCfm() reads funcpara1 with websGetVar() and passes it to save_list_data(), where sprintf() copies it into the stack-based mib_name buffer without a length bound. No authentication or user interaction is required, and the documented consequence is limited to denial of service rather than code execution.

CVSS severity7.5
High
EPSS probability0.37%
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 AC1206 firmware 15.03.06.23 allows remote attackers to interrupt service via a crafted POST request. In /bin/httpd, formSetCfm() reads funcpara1 with websGetVar() and passes it to save_list_data(), where sprintf() copies it into the stack-based mib_name buffer without a length bound. No authentication or user interaction is required, and the documented consequence is limited to denial of service rather than code execution.

The record

CVE
CVE-2024-53621
Published
Jun 30, 2025
Updated
Jun 30, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-121, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 30, 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

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1499Endpoint Denial of Service

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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