CVE-2025-29044Public exploitNetwork attack vector

Unauthenticated code execution via QUERY_STRING stack overflow

Published Apr 17, 2025 · Updated Apr 18, 2025

Stack-based buffer overflow in cgiMain in NETGEAR R6100 firmware 1.0.1.28 allows remote attackers to execute arbitrary code via QUERY_STRING. The cgiMain main function processes the QUERY_STRING environment value with sprintf without a length bound, overwriting its stack frame. No authentication or user interaction is required; a crafted request can hijack cgiMain control flow and run code with the service's privileges.

CVSS severity9.8
Critical
EPSS probability1.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Stack-based buffer overflow in cgiMain in NETGEAR R6100 firmware 1.0.1.28 allows remote attackers to execute arbitrary code via QUERY_STRING. The cgiMain main function processes the QUERY_STRING environment value with sprintf without a length bound, overwriting its stack frame. No authentication or user interaction is required; a crafted request can hijack cgiMain control flow and run code with the service's privileges.

The record

CVE
CVE-2025-29044
Published
Apr 17, 2025
Updated
Apr 18, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 18, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
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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