CVE-2026-28952

Description

An integer overflow was addressed with improved input validation. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5. An app may be able to cause unexpected system termination.

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 22:08 UTC
Last updated: 2026-05-12 19:29 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/28xxx/CVE-2026-28952.json
Linked Threat: CVE-2026-28952 — CVE-2026-28952

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 14:08:26 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: 0.0002 (probability of exploitation in next 30 days)
EPSS percentile: 5.61% vs all CVEs — higher = more likely to be exploited, as of 2026-05-25

NVD-assigned CWE(s): CWE-190 (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-2026-29257
Assigner: apple
Published: May 11, 2026, 8:08:16 PM
Updated: May 12, 2026, 5:29:02 PM
EUVD base score (CVSS 3.1): 7.5 / 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EUVD-reported EPSS: 0.0200
Vendors: Apple
Products: iOS and iPadOS (0 <18.7.9)

macOS (0 <15.7.7)

macOS (0 <14.8.7)

macOS (0 <26.5)

ENISA description: An integer overflow was addressed with improved input validation. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5. An app may be able to cause unexpected system termination.

EUVD references (4)

Affected products (2)

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

Affected products — CPE 2.3 (3) 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:*:*:*:*:*:*:*:*

Vendor references (4)

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

MITRE references (4) 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.

https://attackerkb.com/topics/CVE-2026-28952 rapid7:attackerkb.com
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-29257 rapid7:euvd.enisa.europa.eu
http://cwe.mitre.org/data/definitions/190.html rapid7:cwe.mitre.org
https://www.first.org/epss/ tenable:www.first.org
https://isc.sans.edu/diary/rss/32976 tenable:isc.sans.edu
https://nvd.nist.gov/vuln/detail/CVE-2026-28952 tenable:nvd.nist.gov
https://www.cve.org/CVERecord?id=CVE-2026-28952 tenable:www.cve.org

NVD-tagged references (4)

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/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/127116 product-security@apple.com Release NotesVendor Advisory
https://support.apple.com/en-us/127117 product-security@apple.com Release NotesVendor Advisory

Remediations (16)

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

cve-details - Red Hat Customer Portal

web:access.redhat.com

Learn about our open source products, services, and company. You are here

2026-05-23 21:00 UTC
CVE-2026-8952 - Vulnerability Details - OpenCVE

web:app.opencve.io

Remediation No vendor fix or workaround currently provided. OpenCVE Recommended Actions Upgrade Mozilla Firefox and Thunderbird to version 151 or newer to remove the flaw. Ensure that the latest Mozilla security patches are automatically applied or manually installed from the official sources.

2026-05-23 21:00 UTC
Nvd - Cve-2026-8952

web:nvd.nist.gov

An official website of the United States government Here's how you know

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
CVE-2026-8952 : Privilege Escalation Vulnerability in Firefox ...

web:securityvulnerability.io

Learn about the privilege escalation vulnerability in Firefox that impacts certain versions of the software. Explore CVE - 2026 -8952 for more information.

2026-05-23 21:00 UTC
CVE-2026-8952 | Ubuntu

web:ubuntu.com

CVE - 2026 -8952 Publication date 19 May 2026 Last updated 21 May 2026

2026-05-23 21:00 UTC
Cve-2026-8952

web:vulmon.com

Vulnerability Summary Firefox 151 and Thunderbird 151 patch a privilege escalation flaw residing in the Application Update component that permits attackers to elevate their access level.

2026-05-23 21:00 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 ...

2026-05-23 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
Nvd - Cve-2026-9082

web:nvd.nist.gov

Information Technology Laboratory National Vulnerability Database Vulnerabilities

2026-05-26 02:51 UTC
Security: CVE-2026-29205 - cPanel & WHM / WP2 Security Update - May 13 ...

web:support.cpanel.net

Latest Article Changes:05/14/26 10:46 AM CST: We have released an additional fix to the recent patch for CVE - 2026 -29205. The updated builds have been backported across all supported versions listed...

2026-05-26 02:51 UTC
Addressing Exchange Server May 2026 vulnerability CVE-2026-42897

web:techcommunity.microsoft.com

We wanted to tell you how to address the Exchange Server May 2026 vulnerability CVE - 2026 -42897.

2026-05-26 02:51 UTC
May 2026 Patch Tuesday: Updates and Analysis | CrowdStrike

web:www.crowdstrike.com

Microsoft has released security updates for 130 vulnerabilities, including 30 critical, in its May 2026 Patch Tuesday rollout.

2026-05-26 02:51 UTC
CVE: Common Vulnerabilities and Exposures

web:www.cve.org

At cve .org, we provide the authoritative reference method for publicly known information-security vulnerabilities and exposures

2026-05-26 02:51 UTC
Microsoft Confirms Active 0-Day Exploit—Check Emergency Mitigation

web:www.forbes.com

Updated May 17: This article, originally published May 16, has been updated to include further details on the emergency mitigation process recommended after the CVE - 2026 -42897 Microsoft Exchange ...

2026-05-26 02:51 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-28952.json.

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              "attackVector": "NETWORK",
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              "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"
            }
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