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CVE-2025-43520

Apple — Apple Multiple Products Classic Buffer Overflow Vulnerability

Apple · CWE-120 — Classic buffer overflow · in CISA KEV since 2026-03-20

CISA federal deadline · Overdue by 7 monthsCISA KEVActively Exploited
75

EVRS 75 of 100 Urgent

Patch This Cycle

Rank 1,354 of 2,962 tracked

Raised to the floor for a confirmed exploited vulnerability.

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Why it scores 75

Evidence available: 6 of 7 signals

Listed in the CISA KEV catalog, and an EPSS probability of 0.004.

  • CISA KEVApplied
  • RansomwareDid not apply
  • Vendor exploitationDid not apply
  • EPSSApplied
  • Microsoft Exploitability IndexNot applicable
  • Pre-patch disclosureNo data
  • KEV recencyDid not apply
  • CVSSApplied

The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data

Fix

Patch or fixed version identified

CISA required action

Fixed in

ipados: update to 18.7.2 or later | iphone os: update to 18.7.2 or later | macos: update to 14.8.2 or later | macos: update to 15.7.2 or later | tvos: update to 26.1 or later | visionos: update to 26.1 or later

Affected versions

  • ipados< 18.7.226.0
  • iphone os< 18.7.226.0
  • macos>= 14.0 < 14.8.2>= 15.0 < 15.7.226.0
  • tvos< 26.1
  • visionos< 26.1
  • watchos< 26.1

Remediation

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Fixed versions from NVD.

Evidence

Each value with its source
MeasureValueSource
CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. 5.5 NVD
FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. 0.004 (35.7th pctl) FIRST EPSS
Actively exploitedWhether a source of record has confirmed attacks using it in the wild. Confirmed CISA KEV
Ransomware campaign useWhether CISA has seen ransomware operators use it. Unknown or none CISA KEV
CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. 2026-04-03 · CISA federal deadline · Overdue by 7 months CISA KEV
Public exploit moduleA module existing is not the same as active exploitation. None known Metasploit
EUVD cross-referenceENISA's record: CVSS 5.5 (v3.1), assigned by apple. Listed ENISA EUVD

Description

NVD

A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, watchOS 26.1. A malicious application may be able to cause unexpected system termination or write kernel memory.

What CISA says to do