PatchTheCVECVE-2021-45608: Certain D-Link, Edimax, NETGEAR, TP-Link, Tenda, and Western Digital devices are affected by an integer overfl
CVE-2021-45608 is a medium-severity flaw (CVSS 6.5) affecting d7800 firmware, r6400v2 firmware, r6700v3 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Certain D-Link, Edimax, NETGEAR, TP-Link, Tenda, and Western Digital devices are affected by an integer overflow by an unauthenticated attacker. Remote code execution from the WAN interface (TCP port 20005) cannot be ruled out; however, exploitability was judged to be of "rather significant complexity" but not "impossible." The overflow is in SoftwareBus_dispatchNormalEPMsgOut in the KCodes NetUSB kernel module. Affected NETGEAR devices are D7800
Why this priority
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.5 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | High |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 2.7% (top 14%) |
| CISA exploited list | No |
| Weakness | CWE-190 |
| Published | 2021-12-26 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-45608?
d7800 firmware: upgrade to 1.0.1.68; r6400v2 firmware: upgrade to 1.0.4.122; r6700v3 firmware: upgrade to 1.0.4.122. Exact commands for each OS are on this page.
Is CVE-2021-45608 being exploited?
CVE-2021-45608 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-45608 affect?
CVE-2021-45608 affects d7800 firmware, r6400v2 firmware, r6700v3 firmware. Severity is medium (CVSS 6.5). Certain D-Link, Edimax, NETGEAR, TP-Link, Tenda, and Western Digital devices are affected by an integer overflow by an unauthenticated attacker. Remote code execution from the WAN interface (TCP port 20005) cannot be ruled out; however, exp
How urgent is CVE-2021-45608?
Priority 54/100. Public exploit reference; Remotely exploitable, no login, no user action
Software pages
TP-Link vulnerabilities · D-Link vulnerabilities · Netgear vulnerabilities · Western Digital vulnerabilities
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