Security readout for executives and security teams
Plain-English summary
Apple fixed a critical memory-safety issue where an app may be able to corrupt coprocessor memory. The source bundle names fixed releases across iOS, iPadOS, macOS Sequoia, tvOS, and watchOS. Business urgency is driven by high CVSS impact and broad Apple device presence, not by confirmed active exploitation.
Executive priority
Treat this as a high-priority Apple patching item, especially for managed mobile and executive devices. No active exploitation is cited, but the critical score and memory corruption impact justify expedited verification and remediation.
Technical view
CVE-2024-54523 is a CWE-787 out-of-bounds write addressed with improved bounds checks. Apple states an app may be able to corrupt coprocessor memory. The CVSS 3.1 score is 9.1 with high confidentiality and availability impact. Exact vulnerable version ranges are not provided beyond fixed release references.
Likely exposure
Organizations using Apple devices below iOS/iPadOS 18.2, macOS Sequoia 15.2, tvOS 18.2, or watchOS 11.2 should assume potential exposure. The bundle does not identify older branch fixes or precise vulnerable version ranges.
Exploitation context
The bundle does not report public exploitation, and the CVE is not marked CISA KEV. The described condition requires an app capable of triggering coprocessor memory corruption, but the sources do not provide exploit maturity, targeting, or proof-of-concept details.
Researcher notes
Evidence is limited to Apple advisory language and CVE metadata. Avoid assuming a specific coprocessor, exploit chain, or affected version range beyond the named fixed releases. The CVSS vector and Apple’s app-based wording should be reconciled against vendor records during deeper triage.
Mitigation direction
- Update iOS and iPadOS devices to 18.2 or later.
- Update macOS Sequoia systems to 15.2 or later.
- Update tvOS devices to 18.2 or later.
- Update watchOS devices to 11.2 or later.
- Check Apple advisories for any branch-specific guidance not included here.
Validation and detection
- Inventory Apple device operating system versions across managed fleets.
- Confirm iOS and iPadOS endpoints report version 18.2 or later.
- Confirm macOS Sequoia endpoints report version 15.2 or later.
- Confirm tvOS and watchOS assets are on the fixed releases.
- Track exceptions for devices unable to receive the fixed updates.
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-2024-54523 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
- 9.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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.
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:N/S:U/C:H/I:N/A:H3.95.2CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
9.1CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
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/121837CVE reference, apple
- https://support.apple.com/en-us/121839CVE reference, apple
- https://support.apple.com/en-us/121843CVE reference, apple
- https://support.apple.com/en-us/121844CVE 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.
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.