CVE-2025-31208Network attack vector

App crash via acv2 out-of-bounds read

Published May 12, 2025 · Updated Apr 2, 2026

An out-of-bounds read in CoreAudio on affected Apple operating systems allows attackers to crash an app by parsing a crafted audio file. The acv2 codec converter fails to validate user-supplied data before reading beyond its allocated buffer. Opening a malicious file or visiting a malicious page is required; on macOS, the over-read can also disclose process memory.

CVSS severity7.5
High
EPSS probability1.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An out-of-bounds read in CoreAudio on affected Apple operating systems allows attackers to crash an app by parsing a crafted audio file. The acv2 codec converter fails to validate user-supplied data before reading beyond its allocated buffer. Opening a malicious file or visiting a malicious page is required; on macOS, the over-read can also disclose process memory.

The record

CVE
CVE-2025-31208
Published
May 12, 2025
Updated
Apr 2, 2026
Vendor
Apple
Product
iOS and iPadOS
Classifications
CWE-20, T1204.002, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <18.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apple · iOS and iPadOSversion=0 <18.5
Apple · visionOSversion=0 <2.5
Apple · tvOSversion=0 <18.5
Apple · macOSversion=0 <13.7.6; version=0 <14.7.6; version=0 <15.5
Apple · iPadOSversion=0 <17.7.7
Apple · watchOSversion=0 <11.5

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1204.002Malicious File
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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