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CVE Record

CVE-2026-28905: The issue was addressed with improved memory handling.

The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5, iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5. Processing maliciously crafted web content may lead to an unexpected process crash.

HighCVSS 8.8Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2026-28905 is a high-severity Apple memory-handling flaw triggered by malicious web content. Apple says it can cause an unexpected process crash and fixes are available in Safari 26.5 and Apple platform releases 26.5. The public bundle does not show active exploitation.

Executive priority

Treat as a priority patching item for Apple fleets because exploitation would be remote through web content and requires only user interaction. No active exploitation is cited, but the high CVSS score and memory-safety class justify prompt update validation.

Technical view

The CVE maps to CWE-119 and CWE-120 memory safety classes with CVSS 3.1 score 8.8. The vector is network-accessible, low complexity, no privileges required, and user interaction required. Apple describes the impact as process crash from crafted web content; detailed root cause and affected version ranges are not provided.

Likely exposure

Exposure is most likely on Apple endpoints, mobile devices, Apple TV, Vision Pro, and Safari installations not updated to the 26.5 fixed releases. Exact vulnerable version ranges are not stated in the bundle.

Exploitation context

The source bundle marks KEV as false and provides no cited evidence of active exploitation. Exploitation requires a user to process maliciously crafted web content. Public technical detail is limited, so assume web-facing content handling is the relevant exposure path.

Researcher notes

Do not overstate impact beyond the sources: Apple names an unexpected process crash, while the CVSS vector lists high confidentiality, integrity, and availability impact. The bundle lacks affected version ranges, proof-of-concept status, root-cause detail, and exploitation evidence.

Mitigation direction

  • Update Safari to 26.5 where applicable.
  • Update iOS and iPadOS devices to 26.5.
  • Update macOS Tahoe systems to 26.5.
  • Update tvOS and visionOS devices to 26.5.
  • Review Apple and Red Hat advisories for environment-specific guidance.

Validation and detection

  • Inventory Apple devices and Safari installations across managed assets.
  • Confirm installed versions match Apple’s fixed 26.5 releases.
  • Check MDM or endpoint telemetry for lagging Apple updates.
  • Review vendor advisories for any Red Hat-tracked exposure in your stack.
  • Monitor for unusual browser or web-content process crashes.
Prepared
Confidence
medium
Sources
10

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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 · low confidence lookup

CWE-119: 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.

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cwe · low confidence lookup

CWE-120: 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 lookup
cve · low confidence lookup

CVE-2026-28905 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
High
CVSS
8.8 (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:H

Official CVE source material

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.

2CVSS vectors
5Timeline events
2ADP providers
18Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: yesTechnical Impact: partial

CVSS vector scores

2 official scores

We 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.

ScoreVersionSeverityVectorExploitImpactSource
8.8CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H2.85.9redhat-SADP
7.5CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N3.93.6CISA-ADP

Vulnerability scoring details

Base CVSS 3.1 score

8.8High
CVSS 3.1 vector shape for CVE-2026-28905Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. ADP timelineredhat-SADP

    Made public.

  4. ADP timelineredhat-SADP

    Reported to Red Hat.

  5. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
cvssV3_1other:ssvc
redhat-SADPwebkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash
other:Red Hat severity ratingcvssV3_1
  • 2026-06-02T13:31:47.863Z: Reported to Red Hat.
  • 2026-06-02T00:00:00.000Z: Made public.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
AppleSafari0Listed
AppleiOS and iPadOS0Listed
ApplemacOS0Listed
AppletvOS0Listed
ApplevisionOS0Listed
Weakness

CWE details

CWE-119CWE-120

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.