Security readout for executives and security teams
Plain-English summary
A malicious website could bypass cross-origin protections and steal data that should remain isolated from other sites. Successful exploitation requires a user to visit or interact with the site. Apple corrected the issue with improved checks across Safari and multiple operating systems.
Executive priority
Treat this as a high-priority browser and endpoint update because visiting a malicious site could expose data across security boundaries. Accelerate remediation for users handling credentials, financial information, customer data, or administrative systems, while recognizing that active exploitation is not substantiated by the supplied evidence.
Technical view
CVE-2025-43480 is classified as CWE-942 and scored CVSS 8.1. It is remotely reachable without privileges, but requires user interaction. The supplied vector rates confidentiality and integrity impact high, availability impact none, and scope unchanged. Public details do not identify the underlying component or precise affected version ranges.
Likely exposure
Exposure is most likely on Apple devices or Safari installations that have not reached the named 26.1 releases. The source bundle lists affected products but provides no reliable lower-version boundaries, so inventory findings cannot establish exposure from version numbers alone beyond confirming whether the fixed release is installed.
Exploitation context
The attack surface is web content: a malicious website may exfiltrate cross-origin data. The supplied sources do not establish active exploitation, and the CVE is not listed as KEV in the bundle. Absence from KEV does not prove exploitation has never occurred.
Researcher notes
Apple describes only improved checks and cross-origin data exfiltration. The sources provide no proof of concept, vulnerable component, detailed root cause, affected version boundaries, or observed attacks. Researchers should avoid inferring additional impact from the broad product list; the CVSS vector indicates possible integrity impact, but the narrative specifically documents exfiltration.
Mitigation direction
- Update Safari to version 26.1 or later where applicable.
- Update supported Apple operating systems to their corresponding 26.1 release or later.
- Prioritize devices used for sensitive web applications or privileged administration.
- Check current Apple guidance for any product-specific deployment requirements.
Validation and detection
- Inventory Safari and Apple operating-system versions across managed devices.
- Confirm listed platforms have installed the applicable 26.1 or later release.
- Review management-platform deployment results for failed, deferred, or unmanaged updates.
- Retest access to sensitive web applications using fully updated devices.
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-942: 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-2025-43480 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
- High
- CVSS
- 8.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
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.
SSVC decision data
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:R/S:U/C:H/I:H/A:N2.85.2CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
8.1HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://support.apple.com/en-us/125632CVE reference, apple
- https://support.apple.com/en-us/125634CVE reference, apple
- https://support.apple.com/en-us/125637CVE reference, apple
- https://support.apple.com/en-us/125638CVE reference, apple
- https://support.apple.com/en-us/125639CVE reference, apple
- https://support.apple.com/en-us/125640CVE reference, apple
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.
Permissive Cross-domain Security Policy with Untrusted Domains
Permissive Cross-domain Security Policy with Untrusted Domains represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.