CVE-2020-9948

HIGHNVD 8.88.8—

8.8

A type confusion issue was addressed with improved memory handling. This issue is fixed in Safari 14.0. Processing maliciously crafted web content may lead to arbitrary code execution.

CVSS v3: 8.8
EG Score: 8.8(medium)
EPSS: 53.0%
KEV: Not listed

Published

October 16, 2020

Last Modified

November 21, 2024

References (10)

product-security@applehttp://seclists.org/fulldisclosure/2020/Nov/18
product-security@applehttp://www.openwall.com/lists/oss-security/2020/11/23/3
product-security@applehttps://security.gentoo.org/glsa/202012-10
product-security@applehttps://support.apple.com/HT211845
product-security@applehttps://www.debian.org/security/2020/dsa-4797
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2020/Nov/18
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2020/11/23/3
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202012-10
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/HT211845
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2020/dsa-4797

Patch Availability(3)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	webkit2gtk-driver (2.30.3-0ubuntu0.20.10.1) @ groovy	2026-05-23	ubuntu
redhat	webkitgtk4-0:2.48.3-2.el7_9	2025-07-07	redhat
redhat	webkit2gtk3-0:2.30.4-1.el8	2021-05-18	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

CWE-843Access of Resource Using Incompatible Type (Type Confusion)

All Vendor Advisories

(3)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 10× 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 00:15 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 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-23 06:38 UTCEG score recompute
2026-05-23 06:38 UTCVendor advisory
2026-05-23 06:38 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2020-9948?

CVE-2020-9948 is a high vulnerability published on October 16, 2020. A type confusion issue was addressed with improved memory handling. This issue is fixed in Safari 14.0. Processing maliciously crafted web content may lead to arbitrary code execution.

When was CVE-2020-9948 disclosed?

CVE-2020-9948 was first published in the National Vulnerability Database on October 16, 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-2020-9948 actively exploited?

CVE-2020-9948 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 53.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-9948?

CVE-2020-9948 has a CVSS v3 base score of 8.8 (NVD).

How do I remediate CVE-2020-9948?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-9948, 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-2020-9948

Explore →

Is Your Infrastructure Affected by CVE-2020-9948?

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

Start Free Scan →Browse All CVEs

CVE-2020-9948

Published

Last Modified

References (10)

Patch Availability(3)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-9948?

Same vendor

Same CWE

CVE-2020-9948

📅 Published

🔄 Last Modified

🔗 References (10)

Patch Availability(3)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-9948?

🔗 Related CVEs(same vendor + same CWE)

Same vendor

Same CWE

Published

Last Modified

References (10)

Frequently asked(5)

Related CVEs(same vendor + same CWE)