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Fencer Vulns
critical 9.8

CVE-2025-31200 kev in the critical feed json

A memory corruption issue was addressed with improved bounds checking.

published 2025-04-16 18 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-11380

cvss
9.8
version 3.1, CNA
cisa kev
Exploited
added 2025-04-17
epss
20.9%
EPSS 20.9% chance of exploitation in 30 days, percentile 97%
public exploits
0
none known

Summary

A memory corruption issue was addressed with improved bounds checking. This issue is fixed in iOS 18.4.1 and iPadOS 18.4.1, macOS Sequoia 15.4.1, tvOS 18.4.1, visionOS 2.4.1, watchOS 11.5. Processing an audio stream in a maliciously crafted media file may result in code execution. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS released before iOS 18.4.1.

Patch / fix

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

  • Apple iOS and iPadOS 18.4.1
  • Apple macOS 15.4.1
  • Apple tvOS 18.4.1
  • Apple visionOS 2.4.1
  • Apple watchOS 11.5

Timeline

  1. 0-day patched (Project Zero)
  2. Published
  3. Added to CISA KEV
  4. CISA patch deadline
  5. CISA SSVC: exploitation active

Known exploited

Added
18 mo ago
Patch by
2025-05-08 (18 mo ago)
Ransomware
Not known
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Vendor, product
Apple, Multiple Products
CISA name
Apple Multiple Products Memory Corruption Vulnerability

Zero-day

Detected in real attacks while still unknown to the vendor and the public, per Google Project Zero's 0day In-the-Wild tracker.

Patched
2025-04-16
Details
project zero tracker

ATT&CK techniques

How it is exploited and what it leads to, in MITRE ATT&CK terms.

  • T1203 Exploitation for Client Execution exploitation
  • T1658 Exploitation for Client Execution exploitation, mobile
  • T1105 Ingress Tool Transfer primary impact
  • T1544 Ingress Tool Transfer primary impact, mobile
  • T1001 Data Obfuscation secondary impact
  • T1059 Command and Scripting Interpreter secondary impact
  • T1106 Native API secondary impact
  • T1406 Obfuscated Files or Information secondary impact, mobile
  • T1557 Adversary-in-the-Middle secondary impact
  • T1562 Impair Defenses secondary impact
  • T1575 Native API secondary impact, mobile
  • T1623 Command and Scripting Interpreter secondary impact, mobile
  • T1629 Impair Defenses secondary impact, mobile
  • T1638 Adversary-in-the-Middle secondary impact, mobile

kev release 2025-07-28, att&ck v16.1. KEV to ATT&CK mappings by the MITRE Center for Threat-Informed Defense (Mappings Explorer, Apache-2.0). © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. Terms of use

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
yes
Technical impact
total
Assessed
11 mo ago

Exploit prediction

20.90% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/JGoyd/iOS-Attack-Chain-CVE-2025-31200-CVE-2025-31201/blob/main/Remote%20Crypto%20Attack%20Chain%20.md referenced PoC, tagged "exploit" by a source, unverified
  • blog.noahhw.dev https://blog.noahhw.dev/posts/cve-2025-31200/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Apple iOS and iPadOS
  • Apple macOS
  • Apple tvOS
  • Apple visionOS
  • Apple watchOS

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.