cve-2026-28955

HIGH CVSS 8.8 nvd

Description

The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5, iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. Processing maliciously crafted web content may lead to an unexpected process crash.

Timeline

Published: 2026-05-11
Last Modified: 2026-10-26

CVSS Details

Attack Vector: NETWORK
Attack Complexity: LOW
Privileges Required: NONE

Affected Products

apple ipados
apple iphone_os
apple macos
apple tvos
apple visionos
apple watchos

Weaknesses (CWE)

CWE-119 CWE-120

CVSS metrics

Version	Base	Severity	Vector	Exploitability	Impact	Source
3.1	8.8	HIGH	`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`	2.8	5.9	134c704f-9b21-4f2e-91b3-4a467353bcc0
3.1	8.8	HIGH	`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`	2.8	5.9	0b0ca135-0b70-47e7-9f44-1890c2a1c46c

CPE configurations

CPE	Version range	Vulnerable
`cpe:2.3:o:apple:ipados::::::::`	< 18.7.9	yes
`cpe:2.3:o:apple:ipados::::::::`	>= 26.0, < 26.5	yes
`cpe:2.3:o:apple:iphone_os::::::::`	< 18.7.9	yes
`cpe:2.3:o:apple:iphone_os::::::::`	>= 26.0, < 26.5	yes
`cpe:2.3:o:apple:macos::::::::`	>= 26.0, < 26.5	yes
`cpe:2.3:o:apple:tvos::::::::`	< 26.5	yes
`cpe:2.3:o:apple:visionos::::::::`	< 26.5	yes
`cpe:2.3:o:apple:watchos::::::::`	< 26.5	yes

NVD metadata

NVD status: Modified
Source identifier: product-security@apple.com

References

https://support.apple.com/en-us/127110 Release Notes, Vendor Advisory
https://support.apple.com/en-us/127111 Release Notes, Vendor Advisory
https://support.apple.com/en-us/127115 Release Notes, Vendor Advisory
https://support.apple.com/en-us/127118 Release Notes, Vendor Advisory
https://support.apple.com/en-us/127119 Release Notes, Vendor Advisory
https://support.apple.com/en-us/127120 Release Notes, Vendor Advisory
https://support.apple.com/en-us/127121
https://access.redhat.com/errata/RHSA-2026:25918
https://access.redhat.com/errata/RHSA-2026:25927
https://access.redhat.com/errata/RHSA-2026:27728
https://access.redhat.com/errata/RHSA-2026:27785
https://access.redhat.com/errata/RHSA-2026:27804
https://access.redhat.com/errata/RHSA-2026:28114
https://access.redhat.com/errata/RHSA-2026:28146
https://access.redhat.com/errata/RHSA-2026:28147
https://access.redhat.com/errata/RHSA-2026:28148
https://access.redhat.com/security/cve/CVE-2026-28955
https://bugzilla.redhat.com/show_bug.cgi?id=2483966
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-28955.json
https://www.zerodayinitiative.com/advisories/ZDI-26-312/

Linked Vulnerabilities

elsa-2026-25918 oracle_linux

elsa-2026-25927 oracle_linux

alas2-2026-3381 amazon_linux

cpuoct2026csaf csaf_oracle

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  "datePublished": "2026-05-11T21:18:56.570",
  "dateUpdated": "2026-10-26T18:10:00.173",
  "description": "The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5, iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. Processing maliciously crafted web content may lead to an unexpected process crash.",
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    "cveTags": [],
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        "lang": "en",
        "value": "The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5, iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. Processing maliciously crafted web content may lead to an unexpected process crash."
      },
      {
        "lang": "es",
        "value": "El problema se abordó con una gestión de memoria mejorada. Este problema está solucionado en iOS 18.7.9 y iPadOS 18.7.9, iOS 26.5 y iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. El procesamiento de contenido web creado con fines maliciosos puede provocar un cierre inesperado del proceso."
      }
    ],
    "id": "CVE-2026-28955",
    "lastModified": "2026-10-26T18:10:00.173",
    "metrics": {
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            "baseScore": 8.8,
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            "confidentialityImpact": "HIGH",
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            "userInteraction": "REQUIRED",
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            "role": "CISA Coordinator",
            "timestamp": "2026-05-22T03:55:52.632985Z",
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        ],
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "type": "Secondary"
      }
    ]
  },
  "severity": "HIGH",
  "source": "nvd",
  "title": "The issue was addressed with improved memory handling"
}

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cve-2026-28955

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