CVE-2021-34947: netgear d7800_firmware Out-of-bounds Write
Vulnerability summary
CVE-2021-34947 is a high (CVSS 8.8) Out-of-bounds Write vulnerability in netgear d7800_firmware. EPSS estimates a 0.55% chance of exploitation in the next 30 days, higher than 44.8% of scored vulnerabilities.
Timeline
- 07-05-2024PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
NETGEAR R7800 net-cgi Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R7800 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the parsing of the soap_block_table file. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated data structure. An attacker can leverage this vulnerability to execute code in the context of root. . Was ZDI-CAN-13055.
CVSS metrics
2 scores · 2 sources · 1 version- NVDNIST8.8HighCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.55%
Chance of exploitation in the next 30 days
Percentile
45%
Versus all other CVEs
30-day change
0.00 pp
From 0.55% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Netgear41 products
- d7800_firmware< 1.0.1.64
- ex2700_firmware< 1.0.1.66
- ex6100_firmware< 1.0.1.106
- ex6150_firmware< 1.0.1.106
- ex6200_firmware< 1.0.1.86
1 vendor · 41 products