CVE-2021-38523
NETGEAR R6400 devices before 1.0.1.70 are affected by a stack-based buffer overflow by an...
NETGEAR R6400 devices before 1.0.1.70 are affected by a stack-based buffer overflow by an authenticated user.
Attack profile
How easy it is to exploit
- Attack vector
- Adjacent network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
NETGEAR R6400 devices before 1.0.1.70 are affected by a stack-based buffer overflow by an authenticated user.
- Record
CVE-2021-38523- CVSS 3.1
- 6.9 Medium
CVSS:3.1/AC:L/AV:A/A:H/C:N/I:L/PR:H/S:C/UI:N - Updated
- 2026-11-02
EUVDEUVD-2021-24973
NETGEAR R6400 devices before 1.0.1.70 are affected by a stack-based buffer overflow by an authenticated user.
- Record
EUVD-2021-24973- CVSS 3.1
- 6.9 Medium
CVSS:3.1/AC:L/AV:A/A:H/C:N/I:L/PR:H/S:C/UI:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-jqvr-33gh-5xm9 No score
NETGEAR R6400 devices before 1.0.1.70 are affected by a stack-based buffer overflow by an...
NETGEAR R6400 devices before 1.0.1.70 are affected by a stack-based buffer overflow by an authenticated user.
- Record
GHSA-jqvr-33gh-5xm9- Weakness
- CWE-787
- Updated
- 2026-11-02
NVD
NETGEAR R6400 devices before 1.0.1.70 are affected by a stack-based buffer overflow by an authenticated user.
- Record
CVE-2021-38523- CVSS 3.1
- 6.9 Medium
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H - CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.5 Medium
AV:N/AC:L/Au:S/C:P/I:P/A:P - Weakness
- CWE-787
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-38523 is a medium vulnerability (CVSS 6.9) in Netgear R6400 Firmware, published August 11, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.80%, the 57th percentile. No source names a fixed version.