CVE-2025-43300

Exp

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.

Published: 2025-08-21 Last update: 2026-04-03 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-43300 is rated Critical Active Threat (96.2/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 4.42%). CISA KEV confirms active exploitation (added 2025-08-21) affecting Apple / iOS, iPadOS, and macOS. a weakness (CWE-787) Unauthenticated remote administrative access may be possible. The CISA remediation deadline has passed—treat as an emergency patch priority.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

CISA KEV Record for CVE-2025-43300

Name: Apple iOS, iPadOS, and macOS Out-of-Bounds Write Vulnerability · CISA KEV detail

Exploit added: 2025-08-21

Action due: 2025-09-11

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

Public exploit references (Exploit-DB) for CVE-2025-43300

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2025-43300

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-22 4.46% 4.42% -0.04%
2 2026-05-10 3.91% 4.46% +0.55%
3 2026-05-09 — 3.91% —

Full EPSS history (43 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-43300

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 6.0 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2025-43300

Affected software / configurations for CVE-2025-43300

Vendor Product Version Raw CPE
apple ipados < 15.8.5 cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
apple ipados >= 16.0, < 16.7.12 cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
apple ipados >= 17.0, < 17.7.10 cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
apple ipados >= 18.0, < 18.6.2 cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
apple iphone_os < 15.8.5 cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple iphone_os >= 16.0, < 16.7.12 cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple iphone_os >= 17.0, < 18.6.2 cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple macos >= 13.0, < 13.7.8 cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
apple macos >= 14.0, < 14.7.8 cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
apple macos >= 15.0, < 15.6.1 cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

References for CVE-2025-43300

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