CVE-2026-43682

criticalpriority · track · 10EPSS 0.007 · 54 %ileexploit · PoCDEEUNLUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

0.72% (54th) EPSS

CVSS 9.8 · critical

Is it mine?

16 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · cert_bund · ncsc_nl

EPSS · scored 2026-10-27

The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. A remote user may be able to cause unexpected system termination or corrupt kernel memory.

cvss

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

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 3.9 · impact 5.9

v3.19.3criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Psecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119US

exploits (1)

Public proof-of-concept and weaponised exploit code.

petermalone/CVE-2026-43682CVE-2026-43682: HFS+ B-tree kernel heap overflow in macOSPoC · poc_in_github

affected products (16)

Products and version ranges known to be affected.

Apple macOS Sequoia <15.7.8all versionscert_bundDE
Apple macOS Sonoma <14.8.8all versionscert_bundDE
Apple macOS Tahoe <26.6all versionscert_bundDE
Apple macOS≤ Sonoma <14.8.8cert_bundDE
Apple macOS≤ Sequoia <15.7.8cert_bundDE
Apple macOS≤ Tahoe <26.6cert_bundDE
Apple macOS0 → 14.8.8enisa_euvdEU
Apple macOS0 → 15.7.8enisa_euvdEU
Apple macOS0 → 26.6enisa_euvdEU
Apple Mac OS≤ 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 macos14.0 → 14.8.8nvdUScpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
apple macos15.0 → 15.7.8nvdUScpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
apple macos26.0 → 26.6nvdUScpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

advisories (2)

Vendor and ecosystem advisories describing this.

NCSC-2026-0267Kwetsbaarheden verholpen in Apple MacOSNL2026-07-28csaf · ncsc_nlNL
Apple heeft meerdere kwetsbaarheden verholpen in MacOS, specifiek in de versies Sequoia 15.7.8, Sonoma 14.8.8 en Tahoe 26.x.
WID-SEC-W-2026-2543Apple macOS (Tahoe, Sonoma und Sequoia): Mehrere SchwachstellenDeutsch2026-07-27csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Apple macOS Tahoe, Sonoma und Sequoia ausnutzen, um seine Privilegien zu erhöhen, um beliebigen Programmcode auszuführen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um Dateien zu manipulieren, 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 2026-07-27modified 2026-10-24

references (9)

External citations — patches, advisories, analysis.

https://support.apple.com/en-us/128067 cnnvd
https://support.apple.com/en-us/128071 cnnvd
https://support.apple.com/en-us/128072 cnnvd
https://support.apple.com/en-us/128067 enisa_euvd
https://support.apple.com/en-us/128071 enisa_euvd
https://support.apple.com/en-us/128072 enisa_euvd
https://support.apple.com/en-us/128067Release NotesVendor Advisorynvd
https://support.apple.com/en-us/128071Release NotesVendor Advisorynvd

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