CVE-2021-41974

CRITICALNVD 9.19.1—

9.1

Tad Book3 editing book page does not perform identity verification. Remote attackers can use the vulnerability to view and modify arbitrary content of books without permission.

CVSS v3: 9.1
EG Score: 9.1(medium)
EPSS: 45.5%
KEV: Not listed

Published

October 8, 2021

Last Modified

November 21, 2024

References (2)

twcert@certhttps://www.twcert.org.tw/tw/cp-132-5173-e21ba-1.html
af854a3a-2127-422b-91ae-364da2661108https://www.twcert.org.tw/tw/cp-132-5173-e21ba-1.html

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 11× 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
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
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 09:17 UTCEG score recompute
2026-05-26 09:17 UTCGHSA enrichment
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2021-41974?

CVE-2021-41974 is a critical vulnerability published on October 8, 2021. Tad Book3 editing book page does not perform identity verification. Remote attackers can use the vulnerability to view and modify arbitrary content of books without permission.

When was CVE-2021-41974 disclosed?

CVE-2021-41974 was first published in the National Vulnerability Database on October 8, 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-2021-41974 actively exploited?

CVE-2021-41974 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 45.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-41974?

CVE-2021-41974 has a CVSS v3 base score of 9.1 (NVD).

How do I remediate CVE-2021-41974?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-41974, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-41974

Explore →

Is Your Infrastructure Affected by CVE-2021-41974?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2021-41974

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(3)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-41974?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)