CVE-2020-9823

HIGHNVD 7.57.5—

7.5

This issue was addressed with improved checks. This issue is fixed in iOS 13.5 and iPadOS 13.5. Users removed from an iMessage conversation may still be able to alter state.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 47.6%
KEV: Not listed

Published

June 9, 2020

Last Modified

November 21, 2024

References (2)

product-security@applehttps://support.apple.com/HT211168
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/HT211168

Data Freshness Timeline

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

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:15 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-29 13:42 UTCEPSS rescore

Frequently asked(5)

What is CVE-2020-9823?

CVE-2020-9823 is a high vulnerability published on June 9, 2020. This issue was addressed with improved checks. This issue is fixed in iOS 13.5 and iPadOS 13.5. Users removed from an iMessage conversation may still be able to alter state.

When was CVE-2020-9823 disclosed?

CVE-2020-9823 was first published in the National Vulnerability Database on June 9, 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-2020-9823 actively exploited?

CVE-2020-9823 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 47.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-9823?

CVE-2020-9823 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2020-9823?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-9823, 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-2020-9823

Explore →

Is Your Infrastructure Affected by CVE-2020-9823?

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

Start Free Scan →Browse All CVEs

CVE-2020-9823

📅 Published

🔄 Last Modified

🔗 References (2)