Read the docs
TI-2024-11264 Aliases CVE-2024-12147GHSA-875c-9gcv-8c6h

Netgear R6900 HTTP Header upgrade_check.cgi buffer overflow

Priority MEDIUM 64CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

A vulnerability was found in Netgear R6900 1.0.1.26_1.0.20. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the file upgrade_check.cgi of the component HTTP Header Handler. The manipulation of the argument Content-Length leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00809 57th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
NETGEARR69001.0.1.26_1.0.20—No fix listedCNA
  • R6900 VendorNETGEAR Affected 1.0.1.26_1.0.20 Fixed in — No fix listed CNA

CPE names CISA-ADP · 1

CPEVersionsRoleVendor
cpe:2.3:o:netgear:r6900_firmware:1.0.1.26:*:*:*:*:*:*:*1.0.1.26—NETGEAR
  • cpe:2.3:o:netgear:r6900_firmware:1.0.1.26:*:*:*:*:*:*:* Versions 1.0.1.26 — ·NETGEAR

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-12147
  2. 2026-10-03 Alias added: GHSA-875c-9gcv-8c6h

References

Exploit 1

Other 2

  • TI-2020-16346 NETGEAR JGS516PE devices before 2.6.0.43 are affected by lack of access control at the function level. KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-04600 Buffer overflow in NETGEAR All versions prior to WNR2000v3 1.1.2.14, WNR2000v4 1.0.0.66… KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-03982 ping.cgi on NETGEAR DGN2200 devices with firmware through 10.0.0.50 allows remote… KEVCVSS 3.1CRITICAL 9.8
  • TI-2016-08250 The NETGEAR WNR2000v5 router contains a buffer overflow in the hidden_lang_avi parameter… KEVCVSS 3.1CRITICAL 9.8
  • TI-2016-01416 (1) boardData102.php, (2) boardData103.php, (3) boardDataJP.php, (4) boardDataNA.php, and… KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-04162 dnslookup.cgi on NETGEAR DGN2200 devices with firmware through 10.0.0.50 allows remote… KEVCVSS 3.1HIGH 8.8
See all 1364 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences