CVE-2026-20455
📛 CVE Title
CVE-2026-20455
Description
In geniezone, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10873936; Issue ID: MSV-6784.
Overview
- State
- PUBLISHED
- Assigner (CNA)
- MediaTek
- CVSS severity
- high
- CVSS score
- 7.8 / 10
- CVSS vector
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Effective score
- 7.8 / 10 HIGH source: CNA overview
- CWE(s)
-
CWE-787 - Reserved
- 2025-11-03
- Published
- 2026-06-01 03:20 UTC
- Last updated
- 2026-06-02 03:55 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/20xxx/CVE-2026-20455.json
- Linked Threat
- CVE-2026-20455 — CVE-2026-20455
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
- 2026-06-01 04:16:22 UTC
- NVD last modified
- 2026-07-22 07:10:00 UTC
- NVD CVSS v3.1
- 7.8 / 10 HIGH source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
- NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Exploitability subscore
- 1.8 / 10
- Impact subscore
- 5.9 / 10
- EPSS score
- 0.0011 (probability of exploitation in next 30 days)
- EPSS percentile
- 1.39% vs all CVEs — higher = more likely to be exploited, as of 2026-07-28
NVD / KEV / EPSS data refreshed 2026-07-28 14:41 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-2026-33544 - Assigner
- MediaTek
- Published
- Jun 1, 2026, 3:20:12 AM
- Updated
- Jun 2, 2026, 3:55:41 AM
- EUVD base score (CVSS 3.1)
-
7.8 / 10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EUVD-reported EPSS
- 0.1100
- Vendors
- MediaTek, Inc.
- Products
-
MediaTek chipset (MT8781)MediaTek chipset (MT6835)MediaTek chipset (MT8673)MediaTek chipset (MT6885)MediaTek chipset (MT6985)MediaTek chipset (MT8765)MediaTek chipset (MT6789)MediaTek chipset (MT6991)MediaTek chipset (MT8786)MediaTek chipset (MT6877)MediaTek chipset (MT6853)MediaTek chipset (MT6983)MediaTek chipset (MT6889)MediaTek chipset (MT6781)MediaTek chipset (MT6895)MediaTek chipset (MT8798)MediaTek chipset (MT6761)MediaTek chipset (MT8793)MediaTek chipset (MT6989)MediaTek chipset (MT8768)MediaTek chipset (MT6899)MediaTek chipset (MT6739)MediaTek chipset (MT8791T)MediaTek chipset (MT6855)MediaTek chipset (MT8797)MediaTek chipset (MT8910)MediaTek chipset (MT6878)MediaTek chipset (MT6893)MediaTek chipset (MT8788)MediaTek chipset (MT6897)MediaTek chipset (MT6768)MediaTek chipset (MT6886)MediaTek chipset (MT6879)MediaTek chipset (MT8766)MediaTek chipset (MT6765)MediaTek chipset (MT6883)
- Aliases
-
GHSA-jf3x-c8h2-5gjj
ENISA description: In geniezone, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10873936; Issue ID: MSV-6784.
EUVD references (1)
Affected products (1)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| MediaTek, Inc. | MediaTek chipset |
MT6739 (affected),
MT6761 (affected),
MT6765 (affected),
MT6768 (affected),
MT6781 (affected),
MT6789 (affected),
MT6835 (affected),
MT6853 (affected),
MT6855 (affected),
MT6877 (affected),
MT6878 (affected),
MT6879 (affected),
MT6883 (affected),
MT6885 (affected),
MT6886 (affected),
MT6889 (affected),
MT6893 (affected),
MT6895 (affected),
MT6897 (affected),
MT6899 (affected),
MT6983 (affected),
MT6985 (affected),
MT6989 (affected),
MT6991 (affected),
MT8673 (affected),
MT8765 (affected),
MT8766 (affected),
MT8768 (affected),
MT8781 (affected),
MT8786 (affected),
MT8788 (affected),
MT8791T (affected),
MT8793 (affected),
MT8797 (affected),
MT8798 (affected),
MT8910 (affected)
|
— |
Affected products — CPE 2.3 (72) 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:mediatek:mt6739_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt6739:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt6761_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt6761:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt6765_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt6765:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt6768_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt6768:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt6781_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt6781:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt6789_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt6789:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt6835_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt6835:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt6853_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt6853:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt6855_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt6855:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt6877_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt6877:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt6878_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt6878:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt6879_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt6879:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt6883_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt6883:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt6885_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt6885:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt6886_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt6886:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt6889_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt6889:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt6893_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt6893:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt6895_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt6895:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt6897_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt6897:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt6899_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt6899:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt6983_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt6983:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt6985_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt6985:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt6989_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt6989:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt6991_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt6991:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt8673_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt8673:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt8765_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt8765:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt8766_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt8766:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt8768_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt8768:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt8781_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt8781:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt8786_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt8786:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt8788_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt8788:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt8791t_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt8791t:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt8793_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt8793:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt8797_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt8797:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt8798_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt8798:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt8910_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt8910:-:*:*:*:*:*:*:*
Vendor references (1)
References embedded in the original CVE record by the assigning CNA.
Web references (4)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
- https://corp.mediatek.com/product-security-bulletin/June-2026 tenable:corp.mediatek.com
- https://nvd.nist.gov/vuln/detail/CVE-2026-20455 tenable:nvd.nist.gov
- https://www.cve.org/CVERecord?id=CVE-2026-20455 tenable:www.cve.org
- https://www.first.org/epss/ tenable:www.first.org
NVD-tagged references (1)
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://corp.mediatek.com/product-security-bulletin/June-2026 security@mediatek.com Vendor Advisory
Remediations (20)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:en-forum.guildwars2.com
05/12/2026—May 12 Release Notes Note to users of third-party programs: The game may not launch or work properly after we release a new build if you use a third-party program, due to possible incompatibilities. ArenaNet cannot offer support if a third-party modification breaks, interferes with, or ...
2026-06-08 15:53 UTC -
web:federalnewsnetwork.com
The problem is most severe in operational technology (OT) environments. In these systems, a security fix often carries more risk than the bug it's meant to address. When a patch threatens the stability of a mission-critical service, the result is a dangerous, if necessary, paralysis. We need to stop treating speed as the only metric of success. The asymmetry of time Federal networks are a ...
2026-06-08 15:53 UTC -
web:hi.service-now.com
ServiceNow 24/7 Support Available Patches Australia Patch 2 Hot Fix 1 Zurich Patch 9 Hot Fix 1 See more for product documentation
2026-06-08 15:53 UTC -
web:msrc.microsoft.com
Security Update Guide - Microsoft Security Response Center
2026-06-08 15:53 UTC -
web:support.google.com
People from all over the world use Google Play to access apps and games every day. Before submitting an app, ask yourself if your app is appropriate for Google Play and compliant with local laws.
2026-06-08 15:53 UTC -
web:support.google.com
On your computer, go to gmail.com. Enter your Google Account email address or phone number and password. If information is already filled in and you need to sign in to a different
2026-06-08 15:53 UTC -
web:wa.me
Hosted by WhatsApp 2026 © WhatsApp LLC Privacy & Terms
2026-06-08 15:53 UTC -
web:warcraftmounts.com
Patch 12.0.5 - mounts listed by source.
2026-06-08 15:53 UTC -
web:www.glennbeck.com
Glenn starts the show by addressing the backlash he has received over his recent discussions on Russian influence in America and Aleksandr Dugin's influence in the West. Glenn warns of attempts to fix diagnoses in society that often lead to worse outcomes. Glenn takes calls from his listeners, who discuss a variety of issues, including questioning how political candidates linked to al-Qaeda ...
2026-06-08 15:53 UTC -
web:www.virustotal.com
VirusTotal is a platform for scanning files and URLs for viruses, malware, and other threats using multiple antivirus engines.
2026-06-08 15:53 UTC -
web:cybersecuritynews.com
Microsoft has officially acknowledged a critical zero-day vulnerability in Microsoft Defender, publicly dubbed "RoguePlanet," and confirmed it is actively developing a security patch to address the flaw.
2026-06-19 02:31 UTC -
web:learn.microsoft.com
In this library you will find the following security documents that have been released by the Microsoft Security Response Center (MSRC). The MSRC investigates all reports of security vulnerabilities affecting Microsoft products and services, and releases these documents as part of the ongoing effort to help you manage security risks and help keep your systems protected. Please use the ...
2026-06-19 02:31 UTC -
web:learn.microsoft.com
Windows 11, version 25H2 is now available for all eligible devices. Devices running Home and Pro editions of Windows 11 that are not managed by IT departments will receive the update to Windows 11, version 25H2 through the machine learning-based intelligent rollout.
2026-06-19 02:31 UTC -
web:nvd.nist.gov
Information Technology Laboratory National Vulnerability Database Vulnerabilities
2026-06-19 02:31 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.
2026-06-19 02:31 UTC -
web:support.microsoft.com
Improvements This update includes new features and quality improvements that were part of the following update: May 12, 2026—KB5089549 (OS Builds 26200.8457 and 26100.8457) May 26, 2026—KB5089573 (OS Builds 26200.8524 and 26100.8524) This update addresses security vulnerabilities documented in the following guide: June 2026 Security Updates. The following summary outlines key quality ...
2026-06-19 02:31 UTC -
web:support.microsoft.com
This update for Windows 11, version 25H2 and 24H2 (KB5084597) incudes security 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. To view the ...
2026-06-19 02:31 UTC -
web:www.malwarebytes.com
Microsoft says it's working on a fix for an unpatched Defender vulnerability that can give attackers the highest level of access on Windows.
2026-06-19 02:31 UTC -
web:www.microsoft.com
Security Update Guide Notifications Microsoft's free Security Update Guide Notifications provide links to security-related software updates and notification of re-released security updates. These notifications are sent via email throughout the month as needed.
2026-06-19 02:31 UTC -
web:zecurit.com
Get the complete breakdown of Microsoft's June 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .
2026-06-19 02:31 UTC
AI Forensic Analysis
Only Available for Registered Users. Sign in to view.
Raw JSON
The full cvelistV5 record. Download as CVE-2026-20455.json.
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"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
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"title": "CISA ADP Vulnrichment"
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{
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{
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{
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}
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"problemTypes": [
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"datePublished": "2026-06-01T03:20:12.838Z",
"dateReserved": "2025-11-03T01:30:59.014Z",
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