CVE-2021-45593
No known exploitation. EPSS puts it in the 54th 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 command injection by an authenticated user. This affects RBR20 before 2.7.3.22, RBR40 before 2.7.3.22, RBR50 before 2.7.2.102, RBS20 before 2.7.3.22, RBS40 before 2.7.3.22, RBR50 before 2.7.2.102, RBK20 before 2.7.3.22, RBK40 before 2.7.3.22, and RBK50 before 2.7.2.102.
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
0.8% chance of exploitation activity in the next 30 days, which ranks it in the 54th 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
- rbr20 firmwareNetworking Infrastructure
- rbr40 firmwareNetworking Infrastructure
- rbr50 firmwareNetworking Infrastructure
- rbs20 firmwareNetworking Infrastructure
- rbs40 firmwareNetworking Infrastructure
- rbk20 firmwareNetworking Infrastructure
- rbk40 firmwareNetworking Infrastructure
- rbk50 firmwareNetworking Infrastructure
And 8 more affected products. See all after sign-in
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Scored 8.4 by NVD.
How it is reached
- Attack Vector AdjacentRequires access to the local network (e.g. same Wi-Fi, Bluetooth)
- Attack Complexity LowNo special conditions — the attack can be reliably reproduced
- Privileges Required HighRequires admin or elevated privileges
- User Interaction NoneNo user interaction needed — fully automated exploitation
Scope
- Scope ChangedThe exploit can affect other components (e.g. sandbox escape, host compromise from VM)
Impact if exploited
- Confidentiality HighTotal information disclosure — all data in the component is compromised
- Integrity HighTotal loss of integrity — attacker can modify any data in the component
- Availability HighTotal denial of service — the component is completely unavailable
Weaknesses
ATT&CK techniques
Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.
Sources
Watch the software you run.
My Stack ranks new CVEs for your products by real-world exploitation, so the next serious one reaches you without reading every advisory.
We'll flag the next CVE, public exploit or patch for Rbr20 Firmware, not every advisory.
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