How severe is CVE-2021-37315?

CVE-2021-37315 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-2021-37315 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-37315?

CVE-2021-37315 affects Asus Rt-ac68u Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-37315?

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-2021-37315 published?

CVE-2021-37315 was published on 2023-02-03 and last updated on 2026-06-17.

CVE-2021-37315

CVE-2021-37315 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-706.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-706
Affected product: Asus Rt-ac68u Firmware
Published: 2023-02-03
Last modified: 2026-06-17

Description

Incorrect Access Control issue discoverd 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 source for COPY and MOVE operations.

Frequently asked questions

What is CVE-2021-37315?: Incorrect Access Control issue discoverd 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 source for COPY and MOVE operations.
How severe is CVE-2021-37315?: CVE-2021-37315 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-2021-37315 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-37315?: CVE-2021-37315 affects Asus Rt-ac68u Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-37315?: 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-2021-37315 published?: CVE-2021-37315 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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