CVE-2024-30620Public exploitNetwork attack vector

Unauthenticated memory corruption via unbounded serviceName copy

Published Apr 2, 2024 · Updated Mar 25, 2025

Stack overflow in Tenda AX1803 1.0.0.1 allows remote attackers to corrupt process memory via a crafted serviceName value. The sub_8C594 routine passes the request parameter to strcpy without checking its length against the destination stack buffer. Exploitation requires two HTTP POST requests: the first sets wan1.connecttype to 2, and the second supplies the oversized serviceName.

CVSS severity9.8
Critical
EPSS probability0.82%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack overflow in Tenda AX1803 1.0.0.1 allows remote attackers to corrupt process memory via a crafted serviceName value. The sub_8C594 routine passes the request parameter to strcpy without checking its length against the destination stack buffer. Exploitation requires two HTTP POST requests: the first sets wan1.connecttype to 2, and the second supplies the oversized serviceName.

The record

CVE
CVE-2024-30620
Published
Apr 2, 2024
Updated
Mar 25, 2025
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
AX1803
Classifications
CWE-787, CWE-120, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 2, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 25, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=v1.0.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · AX1803version=v1.0.0.1

Published CVSS scores

9.8NVDCVSS: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
CWE-120Buffer Copy without Checking Size of Input ('Classic 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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