Security readout for executives and security teams
Plain-English summary
On affected iPhones and iPads, forwarding an email in Mail could load and display remote images even when Lockdown Mode should prevent this. Remote image loading may disclose limited information to an external server. Apple resolved the issue in iOS 18.6 and iPadOS 18.6.
Executive priority
Schedule prompt remediation, prioritizing sensitive Lockdown Mode users. This is not supported as an emergency incident, but it weakens a security mode specifically intended for high-risk individuals and may expose limited information when malicious email is forwarded.
Technical view
CVE-2025-43280 is a Lockdown Mode protection bypass involving remote images in Mail during email forwarding. It is network-reachable, requires user interaction, and affects confidentiality without identified integrity or availability impact. The supplied CVSS 3.1 score is 4.7. Apple fixed the issue by preventing remote images from loading.
Likely exposure
Exposure is most relevant to devices using Apple Mail in Lockdown Mode that run a vulnerable release and forward attacker-influenced email. The source bundle does not provide reliable lower version boundaries; its affected-version entry of “0” is insufficient for precise scoping.
Exploitation context
The bundle provides no evidence of active exploitation, and CVE-2025-43280 is not identified as a KEV entry. Exploitation requires a user to forward an email. The documented consequence is limited confidentiality exposure through remote image loading; further attacker capabilities are not established.
Researcher notes
The sources identify remote image loading during forwarding but do not describe the disclosed data, affected version floor, underlying implementation, or observed attacks. Do not infer broader Mail compromise. CVSS indicates network access, low complexity, no privileges, required user interaction, changed scope, and low confidentiality impact.
Mitigation direction
- Deploy iOS 18.6 and iPadOS 18.6, or later approved releases, to affected devices.
- Prioritize Lockdown Mode devices used by executives, administrators, journalists, and other sensitive users.
- Consult Apple’s advisory for deployment guidance and any superseding security releases.
Validation and detection
- Inventory iOS and iPadOS versions on devices where Lockdown Mode is enabled.
- Confirm targeted devices report iOS 18.6, iPadOS 18.6, or a later approved release.
- Verify mobile-device-management compliance and investigate devices that missed or rejected the update.
- Review Apple’s advisory before conducting any controlled behavioral validation.
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
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ATT&CK lookup starting points
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Open ATT&CK lookupCVE-2025-43280 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/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:C/C:L/I:N/A:N2.81.4CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
4.7MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/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/124147CVE 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.
Improper Verification of Source of a Communication Channel
Improper Verification of Source of a Communication Channel represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.