CVE-2024-42951Public exploitNetwork attack vector

Unauthenticated router crash via unchecked password decoding

Published Aug 15, 2024 · Updated Aug 16, 2024

Stack overflow in Tenda FH1201 Firmware 1.2.0.14 (408) allows remote attackers to crash the router via a crafted POST request. The fromWizardHandle function passes the attacker-controlled mit_pptpusrpw value to decodePwd, which copies it byte by byte into the fixed-size v54 stack array without checking its length. No authentication or user interaction is required, and successful exploitation interrupts routing availability.

CVSS severity7.5
High
EPSS probability0.55%
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 FH1201 Firmware 1.2.0.14 (408) allows remote attackers to crash the router via a crafted POST request. The fromWizardHandle function passes the attacker-controlled mit_pptpusrpw value to decodePwd, which copies it byte by byte into the fixed-size v54 stack array without checking its length. No authentication or user interaction is required, and successful exploitation interrupts routing availability.

The record

CVE
CVE-2024-42951
Published
Aug 15, 2024
Updated
Aug 16, 2024
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
FH1201 Firmware
Classifications
CWE-787, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 16, 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=v1.2.0.14\/408\/

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · FH1201 Firmwareversion=v1.2.0.14\/408\/

Published CVSS scores

7.5NIST National Vulnerability DatabaseCVSS: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-787Out-of-bounds Write
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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