How severe is CVE-2021-37317?

CVE-2021-37317 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2021-37317 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-37317?

CVE-2021-37317 affects Asus Rt-ac68u Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-37317?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-37317 published?

CVE-2021-37317 was published on 2023-02-03 and last updated on 2026-06-17.

CVE-2021-37317

CVE-2021-37317 is a critical-severity vulnerability in Asus Rt-ac68u Firmware with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Asus Rt-ac68u Firmware
Published: 2023-02-03
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2021-37317?: 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 severe is CVE-2021-37317?: CVE-2021-37317 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2021-37317 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-37317?: CVE-2021-37317 affects Asus Rt-ac68u Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-37317?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-37317 published?: CVE-2021-37317 was published on 2023-02-03 and last updated on 2026-06-17.

References

https://robertchen.cc/blog/2021/03/31/asus-rce

Affected products (1)

cpe:2.3:o:asus:rt-ac68u_firmware:*:*:*:*:*:*:*:*

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