PatchTheCVECVE-2021-37317: Directory Traversal vulnerability in Cloud Disk in ASUS RT-AC68U router firmware version before 3.0.0.4.386.41
CVE-2021-37317 is a critical-severity flaw (CVSS 9.1) affecting rt-ac68u firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Directory Traversal vulnerability in Cloud Disk in ASUS RT-AC68U router firmware version before 3.0.0.4.386.41634 allows remote attackers to write arbitrary files via improper sanitation on the target for COPY and MOVE operations.
Why this priority
- Critical severity
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.1 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.5% (top 25%) |
| CISA exploited list | No |
| Weakness | CWE-22 |
| Published | 2023-02-03 |
| 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-2021-37317?
rt-ac68u firmware: upgrade to 3.0.0.4.386.41634. Exact commands for each OS are on this page.
Is CVE-2021-37317 being exploited?
CVE-2021-37317 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-2021-37317 affect?
CVE-2021-37317 affects rt-ac68u firmware. Severity is critical (CVSS 9.1). Directory Traversal vulnerability in Cloud Disk in ASUS RT-AC68U router firmware version before 3.0.0.4.386.41634 allows remote attackers to write arbitrary files via improper sanitation on the target for COPY and MOVE operations.
How urgent is CVE-2021-37317?
Priority 61/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action
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