CVE-2023-49424Public exploit

Stack corruption via unbounded virtual-server list

Published Dec 7, 2023 · Updated Sep 13, 2024

Stack-based buffer overflow in Tenda AX12 firmware 22.03.01.46 allows remote attackers to corrupt stack memory via a crafted list parameter. The /goform/SetVirtualServerCfg handler fails to bound the list value before writing it to stack storage. No authentication or user interaction is required, but CISA limits reachability to an adjacent network; the public record does not establish code execution.

CVSS severity9.8
Critical
EPSS probability0.92%
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 AX12 firmware 22.03.01.46 allows remote attackers to corrupt stack memory via a crafted list parameter. The /goform/SetVirtualServerCfg handler fails to bound the list value before writing it to stack storage. No authentication or user interaction is required, but CISA limits reachability to an adjacent network; the public record does not establish code execution.

The record

CVE
CVE-2023-49424
Published
Dec 7, 2023
Updated
Sep 13, 2024
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
AX12 Firmware
Classifications
CWE-121, CWE-787, T1190
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 7, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 13, 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=22.03.01.46

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · AX12 Firmwareversion=22.03.01.46

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.8CISA-ADPCVSS:3.1/AV:A/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.

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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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
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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