CVE-2024-50994

Authenticated router crash via unchecked IPv6 input

Published Nov 5, 2024 · Updated Nov 5, 2024

Stack overflow in ipv6_fix.cgi in NETGEAR R8500 Firmware 1.0.2.160 allows remote authenticated users to crash the router via crafted POST data. The CGI handler copies ipv6_wan_ipaddr, ipv6_lan_ipaddr, ipv6_wan_length, and ipv6_lan_length values into stack buffers without checking their lengths. Reachability requires low-privileged access from an adjacent network, and successful exploitation interrupts router availability without reported data exposure or modification.

CVSS severity5.7
Medium
EPSS probability0.31%
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 ipv6_fix.cgi in NETGEAR R8500 Firmware 1.0.2.160 allows remote authenticated users to crash the router via crafted POST data. The CGI handler copies ipv6_wan_ipaddr, ipv6_lan_ipaddr, ipv6_wan_length, and ipv6_lan_length values into stack buffers without checking their lengths. Reachability requires low-privileged access from an adjacent network, and successful exploitation interrupts router availability without reported data exposure or modification.

The record

CVE
CVE-2024-50994
Published
Nov 5, 2024
Updated
Nov 5, 2024
Vendor
NETGEAR
Product
NETGEAR R8500 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=1.0.2.160

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

NETGEAR · NETGEAR R8500 Firmwareversion=1.0.2.160

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.

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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)
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.

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Technologies

Your stack

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Your stack

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