Background exploitation KEV catalog No authentication

CVE-2019-8506

Apple Multiple Products Type Confusion Vulnerability

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…

CheckOps priority index

6.4/10 Patch within 7 days

Severity8.8

Probability1.6

Exploitation4/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 16.2% higher than 96.9% of CVEs

CVSS 3.1 8.8 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:

Exploited for 1,644 days 04 May 2022

CISA due date 25 May 2022 for US federal agencies

Exploitation probability EPSS · FIRST

EPSS probability (%)Percentile among all CVEs

Exploitation signals 4 / 5

KEV catalog (CISA)04 May 2022
Exploited in EUVD (ENISA)04 May 2022
Used by ransomwareno
EPSS above 10 %16.2%
No account, over the networkyes

What to do

Fix

Apply the vendor’s fix as soon as it is available.

CISA guidance: Apply updates per vendor instructions.

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Description ENISA EUVD

Affected products

IOSSafariiCloud for WindowsiTunes for WindowstvOSwatchOSMultiple Products

Affected versions

unspecified <iOS 12.2
unspecified <Safari 12.1
unspecified <iCloud for Windows 7.11
unspecified <iTunes 12.9.4 for Windows
unspecified <tvOS 12.2
unspecified <watchOS 5.2

Weaknesses (CWE)

CWE-843

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

18 Dec 2019
Published
04 May 2022
Exploitation reported (ENISA)
04 May 2022
Added to the KEV catalog
25 May 2022
CISA remediation due date
26 Sept 2026
EPSS peak: 16.2%

References

Other exploited vulnerabilities from the same vendor

CVE-2026-86950Apple Multiple Products Out-of-Bounds Write Vulnerability
6.7 · Actively exploited
CVE-2026-65400Apple macOS Improper Authentication Vulnerability
5.8 · Actively exploited
CVE-2025-43520Apple Multiple Products Classic Buffer Overflow Vulnerability
3.4 · Background exploitation
CVE-2025-43510Apple Multiple Products Improper Locking Vulnerability
4.3 · Background exploitation
CVE-2025-31277Apple Multiple Products Buffer Overflow Vulnerability
5.4 · Background exploitation
CVE-2023-43000Apple Multiple products Use-After-Free Vulnerability
5.4 · Background exploitation