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CVE Record

CVE-2025-43511: A use-after-free issue was addressed with improved memory management.

A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.2, iOS 18.7.2 and iPadOS 18.7.2, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2, visionOS 26.2, watchOS 26.2. 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

Apple fixed a high-severity memory safety flaw that can be triggered by malicious web content. For the business, the main concern is Apple devices or Safari users reaching hostile or compromised pages before updates are applied. The provided sources describe an unexpected process crash, not confirmed active exploitation.

Executive priority

Treat this as a high-priority patching item for Apple fleets and Safari users. It does not warrant claims of emergency exploitation from the provided evidence, but the web-content trigger and high CVSS score justify prompt update enforcement.

Technical view

CVE-2025-43511 is a CWE-416 use-after-free issue addressed through improved memory management. The CVSS 3.1 score is 8.8 with network attack vector, low complexity, no privileges required, and required user interaction. Apple fixed it across Safari, iOS/iPadOS, macOS Tahoe, visionOS, and watchOS releases listed in the advisory.

Likely exposure

Exposure is most likely on Apple-managed endpoints, mobile devices, and Safari installations that process untrusted web content before receiving the fixed versions. The bundle also includes Red Hat references, but it does not provide enough product detail here to expand affected scope beyond the cited advisories.

Exploitation context

The source bundle does not show CISA KEV listing or another cited confirmation of active exploitation. The plausible trigger described is processing maliciously crafted web content, which requires user interaction such as browsing to attacker-controlled or compromised content.

Researcher notes

The public description is sparse: use-after-free, improved memory management, and malicious web content causing an unexpected process crash. Do not assume code execution, exploit availability, or broader affected products without vendor detail. Red Hat references should be reviewed directly before assigning Linux exposure.

Mitigation direction

  • Update Safari to 26.2 where applicable.
  • Update iOS and iPadOS to 18.7.2 or 26.2.
  • Update macOS Tahoe, visionOS, and watchOS to 26.2.
  • Check Apple and Red Hat advisories for environment-specific guidance.
  • Prioritize managed devices that browse untrusted web content.

Validation and detection

  • Inventory Apple devices and Safari versions against fixed releases.
  • Confirm MDM compliance reports show the patched OS or Safari versions.
  • Review browser crash telemetry for unusual web-content process crashes.
  • Check vulnerability scanners against CVE-2025-43511 where supported.
  • Review Red Hat advisory applicability for any relevant non-Apple assets.
Prepared
Confidence
medium
Sources
12

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-416: 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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cve · low confidence lookup

CVE-2025-43511 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
21Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical 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
6.5CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H2.83.6CISA-ADP

Vulnerability scoring details

Base CVSS 3.1 score

8.8High
CVSS 3.1 vector shape for CVE-2025-43511Attack 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
  • 2026-03-18T20:14:54.262Z: Reported to Red Hat.
  • 2026-03-18T00:00:00.000Z: Made public.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
AppleSafari0Listed
AppleiOS and iPadOS0, 0Listed
ApplemacOS0Listed
ApplevisionOS0Listed
ApplewatchOS0Listed
Weakness

CWE details

CWE-416

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

CWE-416 · source CWE mapping

Use After Free

Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

Open CWE intelligenceSame-CWE CVEs