CVEvulnerability
CVE-2021-34947
8.8 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2024-05-07
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 8.8 HIGH — CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-787
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.
Affected configurations
• netgear d7800 firmware (< 1.0.1.64)
• netgear ex2700 firmware (< 1.0.1.66)
• netgear ex6100 firmware (< 1.0.1.106)
• netgear ex6150 firmware (< 1.0.1.106)
• netgear ex6200 firmware (< 1.0.1.86)
• netgear ex6250 firmware (< 1.0.0.146)
• netgear ex6400 firmware (< 1.0.2.164)
• netgear ex6400v2 firmware (< 1.0.0.146)
• netgear ex6410 firmware (< 1.0.0.146)
• netgear ex6420 firmware (< 1.0.0.146)
• netgear ex6500v1 firmware (< 1.0.0.146)
• netgear ex7300 firmware (< 1.0.2.164)
• netgear ex7300v2 firmware (< 1.0.0.146)
• netgear ex7320 firmware (< 1.0.0.146)
• netgear ex7700 firmware (< 1.0.0.222)
• netgear ex8000 firmware (< 1.0.1.238)
• netgear lbr1020 firmware (< 2.6.5.32)
• netgear lbr20 firmware (< 2.6.5.32)
• netgear r6700ax firmware (< 1.0.5.108)
• netgear r7800 firmware (< 1.0.2.84)
• netgear r8900 firmware (< 1.0.5.36)
• netgear r9000 firmware (< 1.0.5.36)
• netgear rax10 firmware (< 1.0.5.108)
• netgear rax120 firmware (< 1.2.2.24)
• netgear rax120v2 firmware (< 1.2.2.24)
• netgear rax70 firmware (< 1.0.5.108)
• netgear rax78 firmware (< 1.0.5.108)
• netgear rbr10 firmware (< 2.7.4.24)
• netgear rbr20 firmware (< 2.7.4.24)
• netgear rbr40 firmware (< 2.7.4.24)
• netgear rbr50 firmware (< 2.7.4.24)
• netgear rbs10 firmware (< 2.7.4.24)
• netgear rbs20 firmware (< 2.7.4.24)
• netgear rbs40 firmware (< 2.7.4.24)
• netgear rbs50 firmware (< 2.7.4.24)
• netgear rbs50y firmware (< 2.7.4.12)
• netgear wn3000rpv2 firmware (< 1.0.0.88)
• netgear wnr2000v5 firmware (< 1.0.0.78)
• netgear xr450 firmware (< 2.3.2.130)
• netgear xr500 firmware (< 2.3.2.130)
• netgear xr700 firmware (< 1.0.1.44)
Related
Weakness · CWE (1)
- CWE-787 Out-of-bounds Write weakness
References
- https://kb.netgear.com/000064044/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-PSV-2021-0129 Third Party Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-1116/ Third Party Advisory
- https://kb.netgear.com/000064044/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-PSV-2021-0129 Third Party Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-1116/ Third Party Advisory