HOMEVULNERABILITIESCVE-2021-45515
MEDIUM

CVE-2021-45515

NVD-CWE-noinfoPublished: December 26, 2021· Updated: Jun 17, 2026

6.5
CVSS v3.1

Official Description

Certain NETGEAR devices are affected by denial of service. This affects EX7500 before 1.0.0.72, RBS40V before 2.6.1.4, RBW30 before 2.6.1.4, RBRE960 before 6.0.3.68, RBSE960 before 6.0.3.68, RBR750 before 3.2.17.12, RBR850 before 3.2.17.12, RBS750 before 3.2.17.12, RBS850 before 3.2.17.12, RBK752 before 3.2.17.12, and RBK852 before 3.2.17.12.

NVD Source

Technical Analysis

CVE-2021-45515 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 6.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorAdjacent
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

netgear24 product(s)
ex7500 firmwareex7500rbs40v firmwarerbs40vrbw30 firmwarerbw30rbke963 firmwarerbke963rbre960 firmwarerbre960rbse960 firmwarerbse960+12
Source: NVD CPE · 24 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://kb.netgear.com/000064484/Security-Advisory-for-Denial-of-Service-on-Some-Extenders-and-WiFi-Systems-PSV-2020-0286
ADVISORYhttps://kb.netgear.com/000064484/Security-Advisory-for-Denial-of-Service-on-Some-Extenders-and-WiFi-Systems-PSV-2020-0286

All References (2)

→
https://kb.netgear.com/000064484/Security-Advisory-for-Denial-of-Service-on-Some-Extenders-and-WiFi-Systems-PSV-2020-0286Vendor Advisory
→
https://kb.netgear.com/000064484/Security-Advisory-for-Denial-of-Service-on-Some-Extenders-and-WiFi-Systems-PSV-2020-0286Vendor Advisory

Quick Facts

CVE IDCVE-2021-45515
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessNVD-CWE-noinfo
CISA KEVNo
Affected1 vendor(s)
PublishedDec 26, 2021

Related CVEs (NVD-CWE-noinfo)

CVE-2017-10137
10.0
CVE-2017-10402
10.0
CVE-2016-4787
10.0
CVE-2017-3324
10.0
CVE-2017-10912
10.0
CVE-2017-10405
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-45515 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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