CVE-2024-30636Public exploit

Router crash via unbounded PPPoE password

Published Mar 29, 2024 · Updated Aug 16, 2024

Stack-based buffer overflow in Tenda F1202 1.2.0.20(408) allows remote attackers on an adjacent network to crash the router. The formQuickIndex handler processes the PPPOEPassword request parameter without enforcing the destination stack buffer's capacity. The request requires no privileges or user interaction, and the documented consequence is a service crash rather than data disclosure or modification.

CVSS severity6.5
Medium
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stack-based buffer overflow in Tenda F1202 1.2.0.20(408) allows remote attackers on an adjacent network to crash the router. The formQuickIndex handler processes the PPPOEPassword request parameter without enforcing the destination stack buffer's capacity. The request requires no privileges or user interaction, and the documented consequence is a service crash rather than data disclosure or modification.

The record

CVE
CVE-2024-30636
Published
Mar 29, 2024
Updated
Aug 16, 2024
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
FH1202 Firmware
Classifications
CWE-121, T1499.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 29, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=1.2.0.14\(408\)

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · FH1202 Firmwareversion=1.2.0.14\(408\)

Published CVSS scores

6.5CISA ADPCVSS:3.1/AV:A/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.

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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1499.004Application or System Exploitation Flood

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo