CVE-2020-11782
About
Certain NETGEAR devices are affected by stored XSS. This affects D7800 before 1.0.1.56, R7500v2 before 1.0.3.46, R7800 before 1.0.2.68, R8900 before 1.0.4.28, R9000 before 1.0.4.28, RAX120 before 1.0.0.78, XR500 before 2.3.2.56, and XR700 before 1.0.1.10.
Rainforest analyst review
This is stored cross-site scripting on certain NETGEAR devices, but the important detail is buried in the vector: injecting the payload requires high privileges, and triggering it requires a victim to view the affected page. The impact is also limited, partial confidentiality and integrity, not device takeover.
Strung together, those preconditions make this a weak bug in practice. An attacker who already holds admin-level access to the device to plant the script doesn't need XSS to do damage, so the realistic scenario is narrow, essentially escalating or persisting within an already-compromised admin context. This is not something opportunistic botnets weaponize.
We deliberately rank this below its already-modest 4.8 for most environments and flag the preconditions plainly. The useful work is a firmware inventory of the affected NETGEAR models so it can be swept up in routine update cycles, not treated as an incident.
References
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Frequently asked questions
What is CVE-2020-11782?
Certain NETGEAR devices are affected by stored XSS. This affects D7800 before 1.0.1.56, R7500v2 before 1.0.3.46, R7800 before 1.0.2.68, R8900 before 1.0.4.28, R9000 before 1.0.4.28, RAX120 before 1.0.0.78, XR500 before 2.3.2.56, and XR700 before 1.0.1.10.
How severe is CVE-2020-11782?
CVE-2020-11782 carries a CVSS 3.1 base score of 4.8, rated medium. On the Rainforest Risk Index — which weighs the severity alongside how easy the flaw is to reach and how broad its impact is — it scores 51 out of 100, in the elevated band.
How is CVE-2020-11782 exploited?
According to the CVSS vector (CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N): attack vector Network, attack complexity Low, privileges required High, user interaction Required. Impact on confidentiality Low, integrity Low and availability None.
Which products are affected by CVE-2020-11782?
Public advisories list the following as affected: d7800, d7800 firmware, r7500, r7500 firmware, r7800, r7800 firmware, +10. Check the references on this page for the exact versions each vendor confirms.
How do I fix CVE-2020-11782?
Apply the fix the vendor published — the references on this page link to the primary advisories and patches. When patching can't happen right away, reduce the exposure of the affected component and watch it for exploitation attempts. Rainforest customers see this vulnerability correlated to their own assets and prioritized by real exposure, not by score alone.
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