CVE-2021-36710

HIGHNVD 8.88.8—

8.8

ToaruOS 1.99.2 is affected by incorrect access control via the kernel. Improper MMU management and having a low GDT address allows it to be mapped in userland. A call gate can then be written to escalate to CPL 0.

CVSS v3: 8.8
EG Score: 8.8(medium)
EPSS: 15.1%
KEV: Not listed

Published

June 8, 2022

Last Modified

November 21, 2024

References (2)

cve@mitrehttps://github.com/mehsauce/kowasuos/blob/master/exploits/kowasu-sysfunc-strikes-back.c
af854a3a-2127-422b-91ae-364da2661108https://github.com/mehsauce/kowasuos/blob/master/exploits/kowasu-sysfunc-strikes-back.c

Weakness Classification(2)

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

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.

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Frequently asked(5)

What is CVE-2021-36710?

CVE-2021-36710 is a high vulnerability published on June 8, 2022. ToaruOS 1.99.2 is affected by incorrect access control via the kernel. Improper MMU management and having a low GDT address allows it to be mapped in userland. A call gate can then be written to escalate to CPL 0.

When was CVE-2021-36710 disclosed?

CVE-2021-36710 was first published in the National Vulnerability Database on June 8, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-36710 actively exploited?

CVE-2021-36710 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 15.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-36710?

CVE-2021-36710 has a CVSS v3 base score of 8.8 (NVD).

How do I remediate CVE-2021-36710?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-36710, 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-2021-36710

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(2)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-36710?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)