CVE-2021-45670
No known exploitation. EPSS puts it in the 33rd percentile. A vendor fix is available.
What to do
The vendor has published a fix. Version details are below where the sources state them.
What it is
From the CVE record
Certain NETGEAR devices are affected by stored XSS. This affects CBR40 before 2.5.0.10, EAX20 before 1.0.0.48, EAX80 before 1.0.1.64, EX6120 before 1.0.0.64, EX6130 before 1.0.0.44, EX7500 before 1.0.0.72, R7000 before 1.0.11.116, R7900 before 1.0.4.38, R8000 before 1.0.4.68, RAX200 before 1.0.3.106, RBS40V before 2.6.1.4, RBW30 before 2.6.1.4, EX3700 before 1.0.0.90, MR60 before 1.0.6.110, R7000P before 1.3.2.126, RAX20 before 1.0.2.82, RAX45 before 1.0.2.72, RAX80 before 1.0.3.106, EX3800 before 1.0.0.90, MS60 before 1.0.6.110, R6900P before 1.3.2.126, RAX15 before 1.0.2.82, RAX50 before 1.0.2.72, RAX75 before 1.0.3.106, RBR750 before 3.2.16.6, RBR850 before 3.2.16.6, RBS750 before 3.2.16.6, RBS850 before 3.2.16.6, RBK752 before 3.2.16.6, and RBK852 before 3.2.16.6.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.4% chance of exploitation activity in the next 30 days, which ranks it in the 33rd percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
5 events over 1061 days, from the signal feeds we watch.
- Patch availablerecord updated
- Publishedweakness classified, att&ck mapped
Affected products
And 47 more affected products. See all after sign-in
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:C/C:L/I:H/A:L
Scored 6.5 by NVD.
How it is reached
- Attack Vector AdjacentRequires access to the local network (e.g. same Wi-Fi, Bluetooth)
- Attack Complexity HighRequires specific conditions like a race condition or non-default configuration
- Privileges Required HighRequires admin or elevated privileges
- User Interaction RequiredA user must click a link, open a file, or perform some action
Scope
- Scope ChangedThe exploit can affect other components (e.g. sandbox escape, host compromise from VM)
Impact if exploited
- Confidentiality LowSome restricted information is disclosed, but limited in scope
- Integrity HighTotal loss of integrity — attacker can modify any data in the component
- Availability LowReduced performance or intermittent disruption of service
Weaknesses
ATT&CK techniques
Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.
Sources
Watch the software you run.
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We'll flag the next CVE, public exploit or patch for CBR40, not every advisory.
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