CVE-2023-25234Public exploitNetwork attack vector

Unauthenticated code execution via unchecked sprintf

Published Feb 27, 2023 · Updated Mar 10, 2025

Stack-based buffer overflow in Tenda AC500 2.0.1.9(1307) allows remote attackers to execute code or crash the device via a crafted request. The fromAddressNat handler passes the user-controlled entrys and mitInterface values to sprintf without length checks, overflowing its stack buffer. The unauthenticated /goform/addressNat endpoint exposes code execution or device interruption to network-reachable attackers.

CVSS severity9.8
Critical
EPSS probability16.61%
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 AC500 2.0.1.9(1307) allows remote attackers to execute code or crash the device via a crafted request. The fromAddressNat handler passes the user-controlled entrys and mitInterface values to sprintf without length checks, overflowing its stack buffer. The unauthenticated /goform/addressNat endpoint exposes code execution or device interruption to network-reachable attackers.

The record

CVE
CVE-2023-25234
Published
Feb 27, 2023
Updated
Mar 10, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 27, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 10, 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 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-787Out-of-bounds Write
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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