CVE-2025-43300

CRITICAL CISA KEV EPSS 97.1%
Published Aug 21, 202510mo ago · Modified Jun 17, 20261w ago
10.0 CVSS 3.1
Critical
Find Similar
Published Aug 21, 2025 10mo ago
Last Modified Jun 17, 2026 1w ago
KEV Listed Aug 21, 2025 10mo ago
KEV Due Sep 11, 2025 291d overdue

Description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.8.5 and iPadOS 15.8.5, iOS 16.7.12 and iPadOS 16.7.12, iOS 18.6.2 and iPadOS 18.6.2, iPadOS 17.7.10, macOS Sequoia 15.6.1, macOS Sonoma 14.7.8, macOS Ventura 13.7.8. Processing a malicious image file may result in memory corruption. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals.

CVSS Details

Base Score
10.0
Exploitability
3.9
Impact
6.0
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Changed
Confidentiality High
Integrity High
Availability High

Threat Intelligence

CISA Known Exploited Overdue 291d
Added
Aug 21, 2025
Due
Sep 11, 2025

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

EPSS Exploit Probability
97.1% percentile
Exploit & Patch Status
Actively Exploited (KEV)
No Patch Available

Weaknesses 1

CWE-787 Out-of-bounds Write Memory Safety

Affected Products 10

VendorProductVersionRange
appleipados* <15.8.5
appleipados*≥16.0  –  <16.7.12
appleipados*≥17.0  –  <17.7.10
appleipados*≥18.0  –  <18.6.2
appleiphone_os* <15.8.5
appleiphone_os*≥16.0  –  <16.7.12
appleiphone_os*≥17.0  –  <18.6.2
applemacos*≥13.0  –  <13.7.8
applemacos*≥14.0  –  <14.7.8
applemacos*≥15.0  –  <15.6.1

References 13

  • seclists.org http://seclists.org/fulldisclosure/2025/Sep/10
    Mailing ListThird Party Advisory
  • seclists.org http://seclists.org/fulldisclosure/2025/Sep/14
    Mailing ListThird Party Advisory
  • seclists.org http://seclists.org/fulldisclosure/2025/Sep/52
    Mailing ListThird Party Advisory
  • github.com https://github.com/b1n4r1b01/n-days/blob/main/CVE-2025-43300.md
    ExploitThird Party Advisory
  • github.com https://github.com/cisagov/vulnrichment/issues/201
    Issue Tracking
  • support.apple.com https://support.apple.com/en-us/124925
    Release NotesVendor Advisory
  • support.apple.com https://support.apple.com/en-us/124926
    Release NotesVendor Advisory
  • support.apple.com https://support.apple.com/en-us/124927
    Release NotesVendor Advisory
  • support.apple.com https://support.apple.com/en-us/124928
    Release NotesVendor Advisory
  • support.apple.com https://support.apple.com/en-us/124929
    Release NotesVendor Advisory
  • support.apple.com https://support.apple.com/en-us/125141
    Release NotesVendor Advisory
  • support.apple.com https://support.apple.com/en-us/125142
    Release NotesVendor Advisory
  • cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-43300
    US Government Resource

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.