CVE-2026-28955

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.

Overview

State: PUBLISHED
Assigner (CNA): apple
CVSS severity: high
CVSS score: 7.5 / 10
CVSS vector: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Effective score: 7.5 / 10 HIGH source: CNA overview
CWE(s): —
Reserved: 2026-03-03
Published: 2026-05-11 22:07 UTC
Last updated: 2026-05-13 21:58 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/28xxx/CVE-2026-28955.json
Linked Threat: CVE-2026-28955 — CVE-2026-28955

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-05-11 21:18:56 UTC
NVD last modified: 2026-05-13 21:16:44 UTC
NVD CVSS v3.1: 7.5 / 10 HIGH source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
NVD CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitability subscore: 3.9 / 10
Impact subscore: 3.6 / 10
EPSS score: 0.0003 (probability of exploitation in next 30 days)
EPSS percentile: 9.96% vs all CVEs — higher = more likely to be exploited, as of 2026-05-25

NVD-assigned CWE(s): CWE-119 (differs from the CNA list above)

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-29260
Assigner: apple
Published: May 11, 2026, 8:07:35 PM
Updated: May 22, 2026, 12:54:42 PM
EUVD base score (CVSS 3.1): 8.8 / 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EUVD-reported EPSS: 0.0300
Vendors: Apple
Products: visionOS (0 <26.5)

watchOS (0 <26.5)

tvOS (0 <26.5)

iOS and iPadOS (0 <18.7.9)

macOS (0 <26.5)

iOS and iPadOS (0 <26.5)

Safari (0 <26.5)

ENISA 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.

EUVD references (7)

Affected products (6)

Vendor	Product	Versions	Platforms
Apple	Safari	`0` (affected)	—
Apple	iOS and iPadOS	`0` (affected), `0` (affected)	—
Apple	macOS	`0` (affected)	—
Apple	tvOS	`0` (affected)	—
Apple	visionOS	`0` (affected)	—
Apple	watchOS	`0` (affected)	—

Affected products — CPE 2.3 (6) NVD

NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.

cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*

Vendor references (7)

References embedded in the original CVE record by the assigning CNA.

MITRE references (7) cveawg.mitre.org

Pulled from MITRE's CVE Services API by the 🛰 Backfill from MITRE button.

Web references (7)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

http://support.apple.com/en-us/127121 rapid7:support.apple.com
http://cwe.mitre.org/data/definitions/119.html rapid7:cwe.mitre.org
https://attackerkb.com/topics/CVE-2026-28955 rapid7:attackerkb.com
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-29260 rapid7:euvd.enisa.europa.eu
https://www.first.org/epss/ tenable:www.first.org
https://nvd.nist.gov/vuln/detail/CVE-2026-28955 tenable:nvd.nist.gov
https://www.cve.org/CVERecord?id=CVE-2026-28955 tenable:www.cve.org

NVD-tagged references (7)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://support.apple.com/en-us/127110 product-security@apple.com Release NotesVendor Advisory
https://support.apple.com/en-us/127111 product-security@apple.com Release NotesVendor Advisory
https://support.apple.com/en-us/127115 product-security@apple.com Release NotesVendor Advisory
https://support.apple.com/en-us/127118 product-security@apple.com Release NotesVendor Advisory
https://support.apple.com/en-us/127119 product-security@apple.com Release NotesVendor Advisory
https://support.apple.com/en-us/127120 product-security@apple.com Release NotesVendor Advisory
https://support.apple.com/en-us/127121 product-security@apple.com

Remediations (16)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

Patch Tuesday, May 2026 Edition - Krebs on Security

web:krebsonsecurity.com

Microsoft expects that exploitation is more likely. May's Patch Tuesday is a welcome respite from April, which saw Microsoft fix a near-record 167 security flaws.

2026-05-23 21:00 UTC
Nvd - Cve-2026-8955

web:nvd.nist.gov

Official websites use .gov A .gov website belongs to an official government organization in the United States.

2026-05-23 21:00 UTC
Security Update Guide - Microsoft

web:portal.msrc.microsoft.com

The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.

2026-05-23 21:00 UTC
SecuriTricks - CVE-2026-28955 - 7.5/10

web:securitricks.com

CVE CVE-2026-28955 - Score : 7.5 - Source : product-security@apple.com - Description : The issue was addressed with improved memory handling. This issue is fixed in 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. - Tags : CWE-119, product ...

2026-05-23 21:00 UTC
About the security content of watchOS 26.5 - Apple Support

web:support.apple.com

About the security content of watchOS 26.5 This document describes the security content of watchOS 26.5. About Apple security updates For our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the Apple security releases page. Apple security documents ...

2026-05-23 21:00 UTC
ArcGIS Server Security 2025 Update 2 Patch - Esri Support

web:support.esri.com

This security patch addresses multiple security vulnerabilities found in ArcGIS Server. Esri recommends that all customers using ArcGIS Server 11.5, 11.4, 11.3, 11.1 and 10.9.1 apply this patch .

2026-05-23 21:00 UTC
iOS 26.5—Apple Just Gave iPhone Users 60 Reasons To Update Now - Forbes

web:www.forbes.com

Apple has released iOS 26.5, fixing a hefty list of over 60 security flaws, many of which are serious. Here's what you need to know.

2026-05-23 21:00 UTC
CVE-2026-28955 - Apple Safari Web Inspector WebCore Style Resolver Use ...

web:www.notcve.org

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.

2026-05-23 21:00 UTC
Oracle Critical Patch Update Advisory - April 2026

web:www.oracle.com

This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.

2026-05-23 21:00 UTC
Patch Tuesday May 2026: Security Updates & CVE Analysis

web:zecurit.com

Get the complete breakdown of Microsoft's May 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .

2026-05-23 21:00 UTC
Security Advisory Bulletin 064 | Ubiquiti Community

web:community.ui.com

Published: May 21, 2026 Updated: May 22, 2026 Version: 1.1 Revision: 1.1 Summary 1 of 5 A malicious actor with access to the network and high privileges could exploit an Improper Input Validation vulnerability found in UniFi OS devices to execute a Command Injection. Affected Products: UniFi OS Server (Version 5.0.6 and earlier) Mitigation : Update your UniFi OS Server to Version 5.0.8 or later ...

2026-05-26 02:50 UTC
CVE-2026-28955 - Apple iOS/ iPadOS/ macOS/ tvOS/ visionOS/ watchOS Web ...

web:cvefeed.io

Affected Products The following products are affected by CVE-2026-28955 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below. ID Vendor Product Action 1 Apple macos 2 Apple iphone_os 3 Apple tvos 4 Apple watchos 5 Apple safari 6 Apple ipados 7 Apple visionos : Total Affected Vendor : 1 ...

2026-05-26 02:50 UTC
Android Security Bulletin—May 2026 - Android Open Source Project

web:source.android.com

Android partners are encouraged to fix all issues in this bulletin and use the latest security patch level. Devices that use the 2026 -05-01 security patch level must include all issues associated with that security patch level, as well as fixes for all issues reported in previous security bulletins.

2026-05-26 02:50 UTC
About the security content of iOS 26.5 and iPadOS 26.5

web:support.apple.com

CVE - 2026 -43660: Cantina WebKit Available for: iPhone 11 and later, iPad Pro 12.9-inch 3rd generation and later, iPad Pro 11-inch 1st generation and later, iPad Air 3rd generation and later, iPad 8th generation and later, and iPad mini 5th generation and later Impact: Processing maliciously crafted web content may prevent Content Security Policy from being enforced Description: The issue was ...

2026-05-26 02:50 UTC
Critical Patches Issued for Microsoft Products, May 12, 2026

web:www.cisecurity.org

<p>Multiple vulnerabilities have been discovered in Microsoft products, the most severe of which could allow for remote code execution. Successful exploitation of the most severe of these vulnerabilities could result in an attacker gaining the same privileges as the logged-on user. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or ...

2026-05-26 02:50 UTC
Windows 11 April 2026 Update tested: What's new, improved and fixed

web:www.windowslatest.com

Windows 11 April 2026 update adds Narrator Copilot support, faster Settings, File Explorer fixes, and key security improvements.

2026-05-26 02:50 UTC

AI Forensic Analysis

Only Available for Registered Users. Sign in to view.

Raw JSON

The full cvelistV5 record. Download as CVE-2026-28955.json.

{
  "containers": {
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      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-28955",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
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                "timestamp": "2026-05-12T19:52:07.687188Z",
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    "cna": {
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        },
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