CVE-2024-50997

Authenticated router crash via oversized PPTP parameter

Published Nov 5, 2024 · Updated Nov 5, 2024

Stack overflow in NETGEAR R8500, XR300, R7000P, and R6400 v2 firmware allows remote authenticated users to crash routers via a crafted POST request. The pptp.cgi handler copies an oversized pptp_user_ip parameter into a fixed-size stack buffer without checking its length. Access from an adjacent network to the authenticated management interface is required; successful exploitation interrupts routing service.

CVSS severity5.7
Medium
EPSS probability0.40%
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 NETGEAR R8500, XR300, R7000P, and R6400 v2 firmware allows remote authenticated users to crash routers via a crafted POST request. The pptp.cgi handler copies an oversized pptp_user_ip parameter into a fixed-size stack buffer without checking its length. Access from an adjacent network to the authenticated management interface is required; successful exploitation interrupts routing service.

The record

CVE
CVE-2024-50997
Published
Nov 5, 2024
Updated
Nov 5, 2024
Vendor
NETGEAR
Product
NETGEAR R7000P Firmware
Classifications
CWE-120, T1499.004
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 5, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 5, 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=1.3.3.154

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

NETGEAR · NETGEAR R7000P Firmwareversion=1.3.3.154
NETGEAR · NETGEAR R6400 Firmwareversion=1.0.4.128
NETGEAR · NETGEAR R8500 Firmwareversion=1.0.2.160
NETGEAR · NETGEAR XR300 Firmwareversion=1.0.3.78

Published CVSS scores

5.7CISA-ADPCVSS:3.1/AV:A/AC:L/PR:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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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