Background exploitation KEV catalog

CVE-2023-32434

Apple Multiple Products Integer Overflow Vulnerability

CheckOps priority index

6.5/10 Patch within 7 days

Severity7.8

Probability5.2

Exploitation3/5

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

EPSS · today 51.5% higher than 98.9% of CVEs

CVSS 3.1 7.8 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:

Exploited for 1,229 days 23 Jun 2023

CISA due date 14 Jul 2023 for US federal agencies

Exploitation probability EPSS · FIRST

EPSS probability (%)Percentile among all CVEs

Exploitation signals 3 / 5

KEV catalog (CISA)23 Jun 2023
Exploited in EUVD (ENISA)23 Jun 2023
Used by ransomwareno
EPSS above 10 %51.5%
No account, over the networkno

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

An integer overflow was addressed with improved input validation. This issue is fixed in watchOS 9.5.2, macOS Big Sur 11.7.8, iOS 15.7.7 and iPadOS 15.7.7, macOS Monterey 12.6.7, watchOS 8.8.1, iOS 16.5.1 and iPadOS 16.5.1, macOS Ventura 13.4.1. An app may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited against versions of iOS released before iOS 15.7.

Affected products

macOSiOS and iPadOSwatchOSMultiple Products

Affected versions

unspecified <13.4
unspecified <12.6
unspecified <16.5
unspecified <9.5
unspecified <15.7
unspecified <8.8
unspecified <11.7

Weaknesses (CWE)

CWE-190

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

23 Jun 2023
Published
23 Jun 2023
Exploitation reported (ENISA)
23 Jun 2023
Added to the KEV catalog
14 Jul 2023
CISA remediation due date
26 Sept 2026
EPSS peak: 51.5%

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