Cyber Resilience

CVE-2021-38538

Medium

Published: 11 August 2021

Published
11 August 2021
Modified
21 November 2024
KEV Added
Patch
CVSS Score v3.1 6.3 CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
EPSS Score 0.0025 48.2th percentile
Risk Priority 13 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-38538 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Netgear D7800 Firmware. Its CVSS base score is 6.3 (Medium).

Operationally, ranked at the 48.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Certain NETGEAR devices are affected by stored XSS. This affects D7800 before 1.0.1.56, R7800 before 1.0.2.68, R8900 before 1.0.4.26, R9000 before 1.0.4.26, 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,…

more

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 XR500 before 2.3.2.56.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

netgear
d7800 firmware
≤ 1.0.1.56
netgear
r7800 firmware
≤ 1.0.2.68
netgear
r8900 firmware
≤ 1.0.4.26
netgear
r9000 firmware
≤ 1.0.4.26
netgear
rax120 firmware
≤ 1.0.0.78
netgear
rbk20 firmware
≤ 2.3.5.26
netgear
rbr20 firmware
≤ 2.3.5.26
netgear
rbs20 firmware
≤ 2.3.5.26
netgear
rbk40 firmware
≤ 2.3.5.30
netgear
rbs40 firmware
≤ 2.3.5.30
+5 more product configuration(s) — see NVD for full list

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-79

Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.

addresses: CWE-79

Validates web inputs to reject script-related content that could produce XSS.

addresses: CWE-79

Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.

References