CVE-2026-43780: An integer overflow was addressed with improved input validation

High severity · published Jul 27, 2026

CVE-2026-43780

An integer overflow was addressed with improved input validation

7.8

CVSS

0.2%

EPSS

On KEV

Description

An integer overflow was addressed with improved input validation. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing a maliciously crafted texture may lead to unexpected app termination.

CVSS vector

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

Attack vector

Local

Complexity

Low

Privileges

None

User interaction

Required

Confidentiality

High

Integrity

High

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)0.2% · higher than 7% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

macOS · Apple

before 14.8.8; before 15.7.8; before 26.6 · source: vendor, NVD

iOS · Apple

before 26.6 · source: NVD

iOS and iPadOS · Apple

before 26.6 · source: vendor

tvOS · Apple

before 26.6 · source: vendor, NVD

visionOS · Apple

before 26.6 · source: vendor, NVD

watchOS · Apple

before 26.6 · source: vendor, NVD

In the news

VulnerabilityHigh

ZDI-26-492: Apple macOS ImageIO Numeric Truncation Remote Code Execution Vulnerability

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Apple macOS. Interaction with the ImageIO library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-43780.

CVE-2026-43780

Jul 29, 2026·Zero Day Initiative

Affected product

macOS

Apple

All macOS CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-43780

CVE.org

https://www.cve.org/CVERecord?id=CVE-2026-43780

Release Notes