CVE-2024-42985Public exploitNetwork attack vector

Router crash via unbounded page parameter formatting

Published Aug 15, 2024 · Updated Aug 16, 2024

Stack-based buffer overflow in Tenda FH1206 02.03.01.35 allows remote attackers to crash the router via a crafted POST request. The fromNatlimit handler passes the unbounded page parameter to sprintf while formatting lan_controllist.asp into a fixed-size stack array. No authentication or user interaction is reported, but the management HTTP endpoint must be network-reachable.

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-based buffer overflow in Tenda FH1206 02.03.01.35 allows remote attackers to crash the router via a crafted POST request. The fromNatlimit handler passes the unbounded page parameter to sprintf while formatting lan_controllist.asp into a fixed-size stack array. No authentication or user interaction is reported, but the management HTTP endpoint must be network-reachable.

The record

CVE
CVE-2024-42985
Published
Aug 15, 2024
Updated
Aug 16, 2024
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
FH1206
Classifications
CWE-121, 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=02.03.01.35

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · FH1206version=02.03.01.35

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5NISTCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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
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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