CVE-2020-35821
Certain NETGEAR devices are affected by stored XSS. This affects D7800 before 1.0.1.56, R7800...
Certain NETGEAR devices are affected by stored XSS. This affects D7800 before 1.0.1.56, R7800 before 1.0.2.74, R8900 before 1.0.4.28, R9000 before 1.0.4.28, RAX120 before 1.0.0.78, RBK20 before 2.3.5.26, RBR20 before 2.3.5.26, RBS20 before 2.3.5.26, RBK40 before 2.3.5.30, RBR40 before 2.3.5.30, RBS40 before 2.3.5.30, RBK50 before 2.3.5.30, RBR50 before 2.3.5.30, RBS50 before 2.3.5.30, and XR700 before 1.0.1.10.
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
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Certain NETGEAR devices are affected by stored XSS. This affects D7800 before 1.0.1.56, R7800 before 1.0.2.74, R8900 before 1.0.4.28, R9000 before 1.0.4.28, RAX120 before 1.0.0.78, RBK20 before 2.3.5.26, RBR20 before 2.3.5.26, RBS20 before 2.3.5.26, RBK40 before 2.3.5.30, RBR40 before 2.3.5.30, RBS40 before 2.3.5.30, RBK50 before 2.3.5.30, RBR50 before 2.3.5.30, RBS50 before 2.3.5.30, and XR700 before 1.0.1.10.
- Record
CVE-2020-35821- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AC:L/AV:A/A:N/C:H/I:H/PR:H/S:U/UI:N - Updated
- 2026-11-02
EUVDEUVD-2020-23476
Certain NETGEAR devices are affected by stored XSS. This affects D7800 before 1.0.1.56, R7800 before 1.0.2.74, R8900 before 1.0.4.28, R9000 before 1.0.4.28, RAX120 before 1.0.0.78, RBK20 before 2.3.5.26, RBR20 before 2.3.5.26, RBS20 before 2.3.5.26, RBK40 before 2.3.5.30, RBR40 before 2.3.5.30, RBS40 before 2.3.5.30, RBK50 before 2.3.5.30, RBR50 before 2.3.5.30, RBS50 before 2.3.5.30, and XR700 before 1.0.1.10.
- Record
EUVD-2020-23476- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AC:L/AV:A/A:N/C:H/I:H/PR:H/S:U/UI:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-9m94-79m8-fpjq No score
Certain NETGEAR devices are affected by stored XSS. This affects D7800 before 1.0.1.56, R7800...
Certain NETGEAR devices are affected by stored XSS. This affects D7800 before 1.0.1.56, R7800 before 1.0.2.74, R8900 before 1.0.4.28, R9000 before 1.0.4.28, RAX120 before 1.0.0.78, RBK20 before 2.3.5.26, RBR20 before 2.3.5.26, RBS20 before 2.3.5.26, RBK40 before 2.3.5.30, RBR40 before 2.3.5.30, RBS40 before 2.3.5.30, RBK50 before 2.3.5.30, RBR50 before 2.3.5.30, RBS50 before 2.3.5.30, and XR700 before 1.0.1.10.
- Record
GHSA-9m94-79m8-fpjq- Weakness
- CWE-79
- Updated
- 2026-11-02
NVD
Certain NETGEAR devices are affected by stored XSS. This affects D7800 before 1.0.1.56, R7800 before 1.0.2.74, R8900 before 1.0.4.28, R9000 before 1.0.4.28, RAX120 before 1.0.0.78, RBK20 before 2.3.5.26, RBR20 before 2.3.5.26, RBS20 before 2.3.5.26, RBK40 before 2.3.5.30, RBR40 before 2.3.5.30, RBS40 before 2.3.5.30, RBK50 before 2.3.5.30, RBR50 before 2.3.5.30, RBS50 before 2.3.5.30, and XR700 before 1.0.1.10.
- Record
CVE-2020-35821- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N - CVSS 3.1
- 4.8 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 3.5 Low
AV:N/AC:M/Au:S/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
- netgear d7800 firmware
- netgear r7800 firmware
- netgear r8900 firmware
- netgear r9000 firmware
- netgear rax120 firmware
- netgear rbk20 firmware
- netgear rbk40 firmware
- netgear rbk50 firmware
- netgear rbr20 firmware
- netgear rbr40 firmware
- netgear rbr50 firmware
- netgear rbs20 firmware
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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-2020-35821 is a medium vulnerability (CVSS 6.1) in Netgear D7800 Firmware, published December 29, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.56%, the 46th percentile. No source names a fixed version.