CVE-2026-8523
📛 CVE Title
CVE-2026-8523
Description
Use after free in Mojo in Google Chrome prior to 148.0.7778.168 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)
Overview
- State
- PUBLISHED
- Assigner (CNA)
- Chrome
- CVSS severity
- high
- CVSS score
- 8.3 / 10
- CVSS vector
AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H- Effective score
- 8.3 / 10 HIGH source: CNA overview
- CWE(s)
-
CWE-416 - Reserved
- 2026-05-14
- Published
- 2026-05-14 21:52 UTC
- Last updated
- 2026-05-15 05:57 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/8xxx/CVE-2026-8523.json
- Linked Threat
- CVE-2026-8523 — CVE-2026-8523
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.
- EPSS score
- 0.0007 (probability of exploitation in next 30 days)
- EPSS percentile
- 22.09% vs all CVEs — higher = more likely to be exploited, as of 2026-05-24
NVD / KEV / EPSS data refreshed 2026-05-25 06:13 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
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-2026-30438 - Assigner
- Chrome
- Published
- May 14, 2026, 7:52:15 PM
- Updated
- May 15, 2026, 3:57:00 AM
- EUVD base score (CVSS 3.1)
-
8.3 / 10
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H - EUVD-reported EPSS
- 0.0700
- Vendors
- Products
-
Chrome (148.0.7778.168 <148.0.7778.168)
- Aliases
-
GHSA-937x-29v2-25x3
ENISA description: Use after free in Mojo in Google Chrome prior to 148.0.7778.168 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)
Microsoft Security Response Center MSRC
Microsoft's vendor-authoritative record from the Security Update Guide — its own CVSS score, impact, severity rating, exploit assessment, and KB-article fixes. Refreshed 2026-07-28 03:00 UTC (source: CVRF).
- Release
- 2026-May
Microsoft remediations / KB articles (2)
- Release Notes — Vendor Fix / Security Update (fixed build 148.0.3967.70)
- https://docs.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security — None Available / Release Notes
Microsoft FAQ (2)
Why is this Chrome CVE included in the Security Update Guide?
The vulnerability assigned to this CVE is in Chromium Open Source Software (OSS) which is consumed by Microsoft Edge (Chromium-based). It is being documented in the Security Update Guide to announce that the latest version of Microsoft Edge (Chromium-based) is no longer vulnerable.
How can I see the version of the browser?
- In your Microsoft Edge browser, click on the 3 dots (...) on the very right-hand side of the window
- Click on Help and Feedback
- Click on About Microsoft Edge
What is the version information for this release?
| Microsoft Edge Version | Date Released | Based on Chromium Version |
|---|---|---|
| 148.0.3967.70 | 05/15/2026 | 148.0.7778.168 |
Affected products (1)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| Chrome |
148.0.7778.168 (affected)
|
— |
Vendor references (2)
References embedded in the original CVE record by the assigning CNA.
MITRE references (2) cveawg.mitre.org
Pulled from MITRE's CVE Services API by the 🛰 Backfill from MITRE button.
Web references (8)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
- None Available msrc
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-8523 rapid7:msrc.microsoft.com
- https://attackerkb.com/topics/CVE-2026-8523 rapid7:attackerkb.com
- http://cwe.mitre.org/data/definitions/416.html rapid7:cwe.mitre.org
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-30438 rapid7:euvd.enisa.europa.eu
- https://www.first.org/epss/ tenable:www.first.org
- https://nvd.nist.gov/vuln/detail/CVE-2026-8523 tenable:nvd.nist.gov
- https://www.cve.org/CVERecord?id=CVE-2026-8523 tenable:www.cve.org
Remediations (17)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:federalnewsnetwork.com
CISA's latest emergency directive tells agencies to immediately patch critical vulnerabilities in Cisco networking devices.
2026-05-23 20:52 UTC -
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 20:52 UTC -
web:techdocs.broadcom.com
What's New This release resolves CVE -2025-22224, CVE -2025-22225, and CVE -2025-22226. For more information on these vulnerabilities and their impact on Broadcom products, see VMSA-2025-0004.
2026-05-23 20:52 UTC -
web:thecyberexpress.com
Cisco has released security updates to fix a critical vulnerability, tracked as CVE - 2026 -20223, affecting its Cisco Secure Workload platform. The flaw, which received the maximum CVSS score of 10.0, could allow an unauthenticated remote attacker to access sensitive information and make unauthorized configuration changes through vulnerable REST ...
2026-05-23 20:52 UTC -
web:www.crowdstrike.com
Microsoft's March 2026 Patch Tuesday addresses 82 CVEs , featuring eight Critical vulnerabilities.
2026-05-23 20:52 UTC -
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 20:52 UTC -
web:www.rapid7.com
vulnerability Google Chrome Vulnerability: CVE-2026-8523 Use after free in Mojo
2026-05-23 20:52 UTC -
web:www.secure.com
Learn the difference between vulnerability remediation and mitigation , and how a risk-based strategy can strengthen your security posture.
2026-05-23 20:52 UTC -
web:www.thehackerwire.com
CVE-2026-8523 is a High severity vulnerability (CVSS 8.3). Use after free in Mojo in Google Chrome prior to 148..7778.168 allowed a remote attacker who had compromised the renderer...
2026-05-23 20:52 UTC -
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 20:52 UTC -
web:blog.qualys.com
Microsoft's February 2026 Patch Tuesday focuses on closing security gaps that attackers could exploit, reinforcing the importance of timely patching in enterprise environments. Here's a quick…
2026-05-26 02:58 UTC -
web:cybersecuritynews.com
Google released a critical Chrome update fixing multiple high-risk vulnerabilities that could enable arbitrary code execution.
2026-05-26 02:58 UTC -
web:krebsonsecurity.com
Here are a few highlights from this month's Patch Tuesday. Image: Shutterstock, @nwz. Two of the bugs Microsoft patched today were publicly disclosed previously.
2026-05-26 02:58 UTC -
web:redmondmag.com
Microsoft this week released one of the largest Patch Tuesday bundles in its history, delivering fixes for 163 new Microsoft CVEs in a month that includes three zero-days and eight Critical-rated ...
2026-05-26 02:58 UTC -
web:support.microsoft.com
This out-of-band update for Windows 11, version 25H2 and 24H2 (KB5085518) includes fixes and improvements. To learn more about differences between security updates, optional non-security preview updates, out-of-band (OOB) updates, and continuous innovation, see Windows monthly updates explained. For information on Windows update terminology, see the different types of Windows software updates ...
2026-05-26 02:58 UTC -
web:www.computerworld.com
Each month, the team at Readiness analyzes the latest Patch Tuesday updates from Microsoft and provides detailed, actionable testing guidance. The company's Patch Tuesday release for February ...
2026-05-26 02:58 UTC -
web:www.rapid7.com
Microsoft is publishing a relatively light 55 vulnerabilities this Patch Tuesday, including six zero-day vulnerabilities already exploited in the wild.
2026-05-26 02:58 UTC
AI Forensic Analysis
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Raw JSON
The full cvelistV5 record. Download as CVE-2026-8523.json.
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"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H",
"version": "3.1"
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{
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"role": "CISA Coordinator",
"timestamp": "2026-05-14T00:00:00+00:00",
"version": "2.0.3"
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"shortName": "CISA-ADP"
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"title": "CISA ADP Vulnrichment"
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"cna": {
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{
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"vendor": "Google",
"versions": [
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"references": [
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"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html"
},
{
"url": "https://issues.chromium.org/issues/483956252"
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"dateReserved": "2026-05-14T05:40:13.592Z",
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