CVE-2020-11877

HIGHNVD 7.57.5—

7.5

airhost.exe in Zoom Client for Meetings 4.6.11 uses 3423423432325249 as the Initialization Vector (IV) for AES-256 CBC encryption. NOTE: the vendor states that this IV is used only within unreachable code

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 52.5%
KEV: Not listed

Published

April 17, 2020

Last Modified

November 21, 2024

References (2)

cve@mitrehttps://dev.io/posts/zoomzoo/
af854a3a-2127-422b-91ae-364da2661108https://dev.io/posts/zoomzoo/

Weakness Classification(2)

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

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
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
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 04:38 UTCEG score recompute
2026-05-27 04:38 UTCGHSA enrichment
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-23 05:18 UTCOSV refresh

Frequently asked(5)

What is CVE-2020-11877?

CVE-2020-11877 is a high vulnerability published on April 17, 2020. airhost.exe in Zoom Client for Meetings 4.6.11 uses 3423423432325249 as the Initialization Vector (IV) for AES-256 CBC encryption. NOTE: the vendor states that this IV is used only within unreachable code

When was CVE-2020-11877 disclosed?

CVE-2020-11877 was first published in the National Vulnerability Database on April 17, 2020, 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-2020-11877 actively exploited?

CVE-2020-11877 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 52.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-11877?

CVE-2020-11877 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2020-11877?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-11877, 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-2020-11877

Explore →

Is Your Infrastructure Affected by CVE-2020-11877?

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

Start Free Scan →Browse All CVEs

CVE-2020-11877

📅 Published

🔄 Last Modified

🔗 References (2)