CVE-2026-43655

highpriority · track · 10EPSS 0.004 · 30 %ileexploit · PoCDEEUNLUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

0.36% (30th) EPSS

CVSS 7.3 · high

Is it mine?

19 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · cert_bund · ncsc_nl

EPSS · scored 2026-10-26

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, watchOS 26.5. An app may be able to cause unexpected system termination or read kernel memory.

cvss

Technical severity, 0–10. One row per scoring source.

7.3

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.3

v3.17.3highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:Lsecondary · ENISA EU

v3.17.3highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:Lsecondaryexploitability 3.9 · impact 3.4

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:Psecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-125US

exploits (1)

Public proof-of-concept and weaponised exploit code.

Somisomair/CVE-2026-43655-AppleM2ScalerCSCDriver-UAFPublic disclosure for CVE-2026-43655 AppleM2ScalerCSCDriver use-after-freePoC · poc_in_github

affected products (19)

Products and version ranges known to be affected.

Apple IOS< 18.7.9cert_bundDE
Apple IOS< 26.5cert_bundDE
Apple iPadOS< 18.7.9cert_bundDE
Apple iPadOS< 26.5cert_bundDE
Apple iOS and iPadOS0 → 26.5enisa_euvdEU
Apple macOS0 → 26.5enisa_euvdEU
Apple tvOS0 → 26.5enisa_euvdEU
Apple watchOS0 → 26.5enisa_euvdEU
Apple IOS≤ vers:unknown/*ncsc_nlNL
Apple iPadOS≤ vers:unknown/*ncsc_nlNL
Apple macOS≤ vers:unknown/*ncsc_nlNL
Apple macOS Sequoia≤ vers:unknown/*ncsc_nlNL
Apple macOS Sonoma≤ vers:unknown/*ncsc_nlNL
Apple macOS Tahoe≤ vers:unknown/*ncsc_nlNL
apple ipados< 26.5nvdUScpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
apple iphone os< 26.5nvdUScpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple macos26.0 → 26.5nvdUScpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
apple tvos< 26.5nvdUScpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
apple watchos< 26.5nvdUScpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*

advisories (4)

Vendor and ecosystem advisories describing this.

NCSC-2026-0138Kwetsbaarheden verholpen in Apple iOS en iPadOSNL2026-05-12csaf · ncsc_nlNL
Apple heeft meerdere kwetsbaarheden verholpen in diverse versies van iOS en iPadOS
NCSC-2026-0139Kwetsbaarheden verholpen in Apple MacOSNL2026-05-12csaf · ncsc_nlNL
Apple heeft meerdere kwetsbaarheden verholpen in diverse versies van macOS (inclusief Sequoia, Sonoma en Tahoe versies).
WID-SEC-W-2026-1459Apple iOS und iPadOS: Mehrere SchwachstellenDeutsch2026-05-11csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Apple iOS und Apple iPadOS ausnutzen, um seine Privilegien zu erhöhen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um beliebigen Programmcode auszuführen, und um Sicherheitsvorkehrungen zu umgehen.
WID-SEC-W-2026-1463Apple macOS Sonoma, macOS Sequoia und macOS Tahoe: Mehrere SchwachstellenDeutsch2026-05-11csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Apple macOS Sonoma, macOS Sequoia und macOS Tahoe ausnutzen, um seine Privilegien zu erhöhen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um beliebigen Programmcode auszuführen, und um Sicherheitsvorkehrungen zu umgehen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund ncsc_nl nvd NVD CVE.org MITRE

published 2026-05-11modified 2026-10-26

references (11)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan