CVE-2026-28979Network attack vector

Process crash via out-of-bounds WebRTC access

Published Jun 29, 2026 · Updated Jun 29, 2026

Out-of-bounds access in WebRTC in Apple Safari, iOS, iPadOS, and macOS before 26.5.2 allows attackers to crash a process via crafted web content. The WebRTC component processes attacker-controlled web content without adequate bounds checking, causing an out-of-range memory access. A victim must process the crafted content; the documented consequence is an unexpected process crash, with no published confidentiality or integrity impact.

CVSS severity6.5
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds access in WebRTC in Apple Safari, iOS, iPadOS, and macOS before 26.5.2 allows attackers to crash a process via crafted web content. The WebRTC component processes attacker-controlled web content without adequate bounds checking, causing an out-of-range memory access. A victim must process the crafted content; the documented consequence is an unexpected process crash, with no published confidentiality or integrity impact.

The record

CVE
CVE-2026-28979
Published
Jun 29, 2026
Updated
Jun 29, 2026
Vendor
Apple
Product
iOS and iPadOS
Classifications
CWE-787, CWE-125, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 29, 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 <26.5.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apple · iOS and iPadOSversion=0 <26.5.2
Apple · Safariversion=0 <26.5.2
Apple · macOSversion=0 <26.5.2

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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-787Out-of-bounds Write
CWE-125Out-of-bounds Read
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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