CVE-2021-37315

CRITICALNVD 9.19.1—Elevated

9.1

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.

CVSS v3: 9.1
EG Score: 9.1(medium)
EPSS: 77.7%
KEV: Not listed

Published

February 3, 2023

Last Modified

March 26, 2025

References (2)

cve@mitrehttps://robertchen.cc/blog/2021/03/31/asus-rce
af854a3a-2127-422b-91ae-364da2661108https://robertchen.cc/blog/2021/03/31/asus-rce

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-706

Data Freshness Timeline

(refreshed 12× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
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2026-05-31 00:15 UTCepss_batch
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2026-05-29 13:42 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-25 07:26 UTCEG score recompute

Frequently asked(5)

What is CVE-2021-37315?

CVE-2021-37315 is a critical vulnerability published on February 3, 2023. 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.

When was CVE-2021-37315 disclosed?

CVE-2021-37315 was first published in the National Vulnerability Database on February 3, 2023, with the most recent update on March 26, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-37315 actively exploited?

CVE-2021-37315 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 77.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-37315?

CVE-2021-37315 has a CVSS v3 base score of 9.1 (NVD).

How do I remediate CVE-2021-37315?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-37315, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2021-37315

📅 Published

🔄 Last Modified

🔗 References (2)