9.3

CVE-2019-8506: Apple Multiple Products Type Confusion Vulnerability

CVSS: 9.3v2.0HighKEVAnalyzed
AliasesUBUNTU-CVE-2019-8506DEBIAN-CVE-2019-8506
Published 18-12-2019Last modified 21-10-2025
Open JSON

Vulnerability summary

CVE-2019-8506 is a high (CVSS 9.3) Type Confusion vulnerability in Apple Multiple Products. It is known to be exploited: CISA lists it, first on 04-05-2022. EPSS estimates a 16.16% chance of exploitation in the next 30 days, higher than 96.9% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
85/100
0100
Critical · default modelHow is this calculated?
CVSS score
9.3/10
010
High · v2.0 (NVD)
EPSS score
16.16%
0%100%
Medium · -1.95 pp in 30 days
KEVListedCISA
RansomwareNone recordedNo known use recorded
Public exploits1exploit-database

Advisory lineage

Upstream 0 · Downstream 6 · Related 4
OPENSUSE-SU-2019:1374-1RHSA-2019:3553RHSA-2020:4035SUSE-SU-2019:1137-1SUSE-SU-2019:1155-1USN-3948-1

Timeline

  1. 18-12-2019
    PublishedVulnerability first disclosed.
  2. 04-05-2022
    Added to CISA KEVApple Multiple Products Type Confusion Vulnerability
  3. 25-05-2022
    CISA remediation dueApply updates per vendor instructions.
  4. 21-10-2025
    Last modifiedVulnerability information updated.

Description

A type confusion issue was addressed with improved memory handling. This issue is fixed in iOS 12.2, tvOS 12.2, watchOS 5.2, Safari 12.1, iTunes 12.9.4 for Windows, iCloud for Windows 7.11. Processing maliciously crafted web content may lead to arbitrary code execution.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

16.16%

Chance of exploitation in the next 30 days

Percentile

97%

Versus all other CVEs

30-day change

-1.95 pp

From 18.11% on 19-09-2026

19-09-202619-10-2026
EPSS score
16.16%

Known exploited

Compare KEV catalogs
CISA KEVListed
Added
04-05-2022
Federal due date
25-05-2022

CISA required action

Apply updates per vendor instructions. nvd.nist.gov/vuln/detail/CVE-2019-8506

Public exploits

1 found
  • exploit-databasedosmultipleVerified

    WebKit JavaScriptCore - 'createRegExpMatchesArray' Type Confusion

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Apple9 products
Ubuntu4 products
  • qtwebkit-opensource-srcAll versions (No fix recorded)
  • qtwebkit-sourceAll versions (No fix recorded)
  • webkit2gtkAll versions (No fix recorded) | < 2.24.1-0ubuntu0.18.04.1
  • webkitgtkAll versions (No fix recorded)
Redhat3 products
Debian1 product
  • webkit2gtk< 2.24.1-1

4 vendors · 17 products

References

13 links
Show all 13 references