CVE-2021-20790

CRITICALNVD 9.69.6—

9.6

Improper control of program execution vulnerability in RevoWorks Browser 2.1.230 and earlier allows an attacker to execute an arbitrary command or code via unspecified vectors.

CVSS v3: 9.6
EG Score: 9.6(medium)
EPSS: 70.5%
KEV: Not listed

Published

September 17, 2021

Last Modified

November 21, 2024

References (4)

vultures@jpcerthttps://jscom.jp/news-20210910_2/
vultures@jpcerthttps://jvn.jp/en/jp/JVN81658818/index.html
af854a3a-2127-422b-91ae-364da2661108https://jscom.jp/news-20210910_2/
af854a3a-2127-422b-91ae-364da2661108https://jvn.jp/en/jp/JVN81658818/index.html

Weakness Classification(1)

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

CWE-668Exposure of Resource to Wrong Sphere

Data Freshness Timeline

(refreshed 11× in last 7d / 19× 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
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 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
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 10:15 UTCEG score recompute
2026-05-26 10:15 UTCGHSA enrichment
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-24 16:49 UTCepss_batch

Frequently asked(5)

What is CVE-2021-20790?

CVE-2021-20790 is a critical vulnerability published on September 17, 2021. Improper control of program execution vulnerability in RevoWorks Browser 2.1.230 and earlier allows an attacker to execute an arbitrary command or code via unspecified vectors.

When was CVE-2021-20790 disclosed?

CVE-2021-20790 was first published in the National Vulnerability Database on September 17, 2021, 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-2021-20790 actively exploited?

CVE-2021-20790 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 70.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-20790?

CVE-2021-20790 has a CVSS v3 base score of 9.6 (NVD).

How do I remediate CVE-2021-20790?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-20790, 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-2021-20790

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-20790?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (4)

Frequently asked(5)

Related CVEs(same CWE)