CVE-2024-2993Public exploitNetwork attack vector

Authenticated memory corruption via oversized PPPoE password

Published Mar 27, 2024 · Updated Aug 21, 2024

Stack-based buffer overflow in Tenda FH1203 2.0.1.6 allows remote authenticated users to overwrite memory through a crafted PPPoE password. The formQuickIndex handler for /goform/QuickIndex processes PPPOEPassword without enforcing the destination stack buffer's length. Low-privileged web-interface access is required, and the overwrite can crash the service or alter firmware-process control flow.

CVSS severity8.8
High
EPSS probability1.57%
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 FH1203 2.0.1.6 allows remote authenticated users to overwrite memory through a crafted PPPoE password. The formQuickIndex handler for /goform/QuickIndex processes PPPOEPassword without enforcing the destination stack buffer's length. Low-privileged web-interface access is required, and the overwrite can crash the service or alter firmware-process control flow.

The record

CVE
CVE-2024-2993
Published
Mar 27, 2024
Updated
Aug 21, 2024
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
FH1203
Classifications
CWE-121, CWE-787, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 27, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 21, 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=2.0.1.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · FH1203version=2.0.1.6
Shenzhen Tenda Technology Co., Ltd. · FH1203 Firmwareversion=2.0.1.6

Published CVSS scores

8.8VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0VulDBAV:N/AC:L/Au:S/C:C/I:C/A:C

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
Privilegesauthenticated
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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