CVE-2026-7963
📛 CVE Title
CVE-2026-7963
Description
Inappropriate implementation in ServiceWorker in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Medium)
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)
- —
- Reserved
- 2026-05-06
- Published
- 2026-05-06 20:12 UTC
- Last updated
- 2026-05-07 05:56 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/7xxx/CVE-2026-7963.json
- Linked Threat
- CVE-2026-7963 — CVE-2026-7963
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
- 2026-05-06 19:16:46 UTC
- NVD last modified
- 2026-05-07 02:02:48 UTC
- NVD CVSS v3.1
- 8.3 / 10 HIGH source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
- NVD CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H- Exploitability subscore
- 1.6 / 10
- Impact subscore
- 6.0 / 10
- EPSS score
- 0.0011 (probability of exploitation in next 30 days)
- EPSS percentile
- 29.54% vs all CVEs — higher = more likely to be exploited, as of 2026-05-24
NVD-assigned CWE(s):
CWE-693
(differs from the CNA list above)
NVD / KEV / EPSS data refreshed 2026-05-25 06:28 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-2026-28029 - Assigner
- Chrome
- Published
- May 6, 2026, 6:12:54 PM
- Updated
- May 7, 2026, 3:56:17 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
- 0.1100
- Vendors
- Products
-
Chrome (148.0.7778.96 <148.0.7778.96)
ENISA description: Inappropriate implementation in ServiceWorker in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Medium)
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 2026-11-05 03:38 UTC (source: CVRF).
- Release
- 2026-May
Microsoft remediations / KB articles (2)
- Release Notes — Vendor Fix / Security Update (fixed build 148.0.3967.54)
- 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 |
|---|---|---|
| 148.0.3967.54 | 05/07/2026 | 148.0.7778.97 |
Affected products (1)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| Chrome |
148.0.7778.96 (affected)
|
— |
Affected products — CPE 2.3 (4) 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:a:google:chrome:*:*:*:*:*:*:*:*cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
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-2026-7963 rapid7:msrc.microsoft.com
- https://attackerkb.com/topics/CVE-2026-7963 rapid7:attackerkb.com
- http://cwe.mitre.org/data/definitions/693.html rapid7:cwe.mitre.org
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-28029 rapid7:euvd.enisa.europa.eu
- https://www.first.org/epss/ tenable:www.first.org
- https://nvd.nist.gov/vuln/detail/CVE-2026-7963 tenable:nvd.nist.gov
- https://www.cve.org/CVERecord?id=CVE-2026-7963 tenable:www.cve.org
NVD-tagged references (2)
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://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop.html chrome-cve-admin@google.com Vendor AdvisoryRelease Notes
- https://issues.chromium.org/issues/497250399 chrome-cve-admin@google.com Permissions Required
Remediations (15)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:blackswan-cybersecurity.com
Cloud Files API activity originating outside legitimate OneDrive/sync processes. Mitigation Steps: Apply all Windows updates immediately (monitor MSRC for an emergency RedSun-specific patch . None released as of April 17, 2026 ). Supplement Defender with a secondary EDR solution (e.g., Huntress) capable of detecting Defender bypasses.
2026-05-23 21:10 UTC -
web:cyberinsider.com
Microsoft fixes 83 vulnerabilities in Windows 11 with the March 2026 Patch Tuesday update, including two publicly disclosed zero-day flaws.
2026-05-23 21:10 UTC -
web:cyberpress.org
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added two actively exploited Microsoft Defender vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog, issuing an urgent remediation directive for federal agencies with a due date of June 3, 2026 .
2026-05-23 21:10 UTC -
web:cybersecuritynews.com
Microsoft released its March 2026 Patch Tuesday security update on March 10, 2026 , addressing 78 vulnerabilities across Windows, Microsoft Office, Azure, SQL Server, and .NET. The update includes one actively exploited zero-day vulnerability and multiple Critical-rated flaws demanding immediate attention from security teams. The most urgent fix this month is CVE - 2026 -21262, the sole zero-day ...
2026-05-23 21:10 UTC -
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 21:10 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 21:10 UTC -
web:www.bleepingcomputer.com
Today is Microsoft's March 2026 Patch Tuesday with security updates for 79 flaws, including 2 publicly disclosed zero-day vulnerabilities.
2026-05-23 21:10 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 21:10 UTC -
web:www.pcworld.com
This month's Patch Tuesday brings over 80 fixes for various security vulnerabilities. Fortunately, none are actively being exploited in the wild yet.
2026-05-23 21:10 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 21:10 UTC -
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 02:47 UTC -
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 .
2026-05-26 02:47 UTC -
web:support.microsoft.com
This out-of-band Hotpatch update for Windows 11, version 25H2 and 24H2 (KB5078167), improves functionality, performance, and reliability. 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 ...
2026-05-26 02:47 UTC -
web:support.sap.com
SAP security patch day bulletin
2026-05-26 02:47 UTC -
web:www.cisa.gov
CISA has added one new vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE - 2026 -6973
2026-05-26 02:47 UTC
AI Forensic Analysis
Only Available for Registered Users. Sign in to view.
Raw JSON
The full cvelistV5 record. Download as CVE-2026-7963.json.
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.3,
"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"
}
},
{
"other": {
"content": {
"id": "CVE-2026-7963",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-06T00:00:00+00:00",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-693",
"description": "CWE-693 Protection Mechanism Failure",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-07T03:56:17.382Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "Chrome",
"vendor": "Google",
"versions": [
{
"lessThan": "148.0.7778.96",
"status": "affected",
"version": "148.0.7778.96",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Inappropriate implementation in ServiceWorker in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Medium)"
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "Inappropriate implementation",
"lang": "en"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-06T18:12:54.194Z",
"orgId": "ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28",
"shortName": "Chrome"
},
"references": [
{
"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop.html"
},
{
"url": "https://issues.chromium.org/issues/497250399"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28",
"assignerShortName": "Chrome",
"cveId": "CVE-2026-7963",
"datePublished": "2026-05-06T18:12:54.194Z",
"dateReserved": "2026-05-05T22:59:21.773Z",
"dateUpdated": "2026-05-07T03:56:17.382Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}