Security readout for executives and security teams
Plain-English summary
CVE-2025-43300 is an Apple image-processing memory corruption flaw. A malicious image file could corrupt memory on affected iPhones, iPads, and Macs. Apple says it was reportedly exploited in an extremely sophisticated attack against specific targeted individuals, and CISA lists it in KEV.
Executive priority
Treat this as urgent for Apple fleets, especially high-risk personnel. The business risk is concentrated but serious: targeted compromise through malicious image processing could affect confidentiality, integrity, and availability on unpatched devices.
Technical view
The issue is a CWE-787 out-of-bounds write fixed through improved bounds checking. Apple describes the impact as memory corruption when processing a malicious image file. The provided record lists critical CVSS 10, but the practical exploitation details and affected component name are not provided in the bundle.
Likely exposure
Exposure is likely wherever Apple iOS, iPadOS, or macOS devices remain below the fixed releases: iOS/iPadOS 15.8.5, 16.7.12, 18.6.2; iPadOS 17.7.10; macOS Sequoia 15.6.1, Sonoma 14.7.8, or Ventura 13.7.8.
Exploitation context
Active exploitation is supported by Apple’s report and CISA KEV listing. The sources describe targeted, extremely sophisticated exploitation, not broad commodity exploitation. No safe public source in the bundle establishes mass exploitation, exploit availability, or reliable detection indicators.
Researcher notes
The bundle does not identify the exact Apple component, indicators of compromise, exploit chain, or exploit mechanics. Analysis should stay anchored to version exposure, Apple security advisories, CISA KEV status, and endpoint telemetry for suspicious image-processing or crash activity.
Mitigation direction
- Update affected Apple devices to the fixed iOS, iPadOS, or macOS releases.
- Prioritize executives, administrators, journalists, legal teams, and other high-risk users.
- Use MDM to enforce minimum OS versions and block noncompliant devices.
- Retire or isolate devices that cannot receive the relevant Apple update.
- Monitor Apple and CISA guidance for any additional advisories.
Validation and detection
- Inventory Apple devices and record exact iOS, iPadOS, and macOS versions.
- Compare fleet versions against Apple’s fixed release list.
- Confirm MDM compliance policies reflect the fixed minimum versions.
- Check vulnerability management data for CVE-2025-43300 exposure.
- Review CISA KEV tracking for remediation deadlines and status.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-787: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2025-43300 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 10 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H3.96Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
10CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://support.apple.com/en-us/124925CVE reference
- https://support.apple.com/en-us/124926CVE reference
- https://support.apple.com/en-us/124927CVE reference
- https://support.apple.com/en-us/124928CVE reference
- https://support.apple.com/en-us/124929CVE reference
- https://support.apple.com/en-us/125141CVE reference
- https://support.apple.com/en-us/125142CVE reference
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-43300CVE reference · government-resource
- https://github.com/cisagov/vulnrichment/issues/201CVE reference · issue-tracking
- https://github.com/b1n4r1b01/n-days/blob/main/CVE-2025-43300.mdCVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.