CVE-2026-28977

Application crash via ImageIO bounds-check failure

Published May 11, 2026 · Updated May 11, 2026

Bounds-checking failure in ImageIO on Apple operating systems allows attackers to crash an app by supplying a maliciously crafted file. The ImageIO parser fails to constrain an operation on attacker-controlled file data, permitting out-of-bounds access; Apple has not disclosed the specific parser, file format, or operation. Exploitation requires the file to reach ImageIO processing, and the documented consequence is application termination without reported system interruption or code execution.

CVSS severityUnavailable
Unscored
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Bounds-checking failure in ImageIO on Apple operating systems allows attackers to crash an app by supplying a maliciously crafted file. The ImageIO parser fails to constrain an operation on attacker-controlled file data, permitting out-of-bounds access; Apple has not disclosed the specific parser, file format, or operation. Exploitation requires the file to reach ImageIO processing, and the documented consequence is application termination without reported system interruption or code execution.

The record

CVE
CVE-2026-28977
Published
May 11, 2026
Updated
May 11, 2026
Vendor
Apple
Product
iOS and iPadOS
Classifications
CWE-119
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. May 11, 2026CVE publishedPublication date reported by the CVE source.
  2. May 11, 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 <18.7.9
  2. Affected versionversion=0 <26.5

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Apple · iOS and iPadOSversion=0 <18.7.9; version=0 <26.5
Apple · visionOSversion=0 <26.5
Apple · tvOSversion=0 <26.5
Apple · macOSversion=0 <14.8.7; version=0 <15.7.7; version=0 <26.5
Apple · watchOSversion=0 <26.5

Published CVSS scores

No CVSS assessment is available in this record.

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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

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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