CVE-2026-20452
📛 CVE Title
CVE-2026-20452
Description
In wlan AP driver, there is a possible memory corruption due to a heap buffer overflow. This could lead to remote (proximal/adjacent) code execution with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00480138; Issue ID: MSV-6295.
Overview
- State
- PUBLISHED
- Assigner (CNA)
- MediaTek
- CVSS severity
- high
- CVSS score
- 7.7 / 10
- CVSS vector
AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Effective score
- 7.7 / 10 HIGH source: CNA overview
- CWE(s)
-
CWE-122 - 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-2026-20452.json
- Linked Threat
- CVE-2026-20452 — CVE-2026-20452
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 04:16:21 UTC
- NVD last modified
- 2026-07-22 07:10:00 UTC
- NVD CVSS v3.1
- 8.0 / 10 HIGH source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
- NVD CVSS vector
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Exploitability subscore
- 2.1 / 10
- Impact subscore
- 5.9 / 10
- EPSS score
- 0.0043 (probability of exploitation in next 30 days)
- EPSS percentile
- 35.61% vs all CVEs — higher = more likely to be exploited, as of 2026-07-27
NVD / KEV / EPSS data refreshed 2026-07-28 14:02 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-2026-33541 - Assigner
- MediaTek
- Published
- Jun 1, 2026, 3:20:08 AM
- Updated
- Jun 2, 2026, 3:55:38 AM
- EUVD base score (CVSS 3.1)
-
8.0 / 10
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EUVD-reported EPSS
- 0.4400
- Vendors
- MediaTek, Inc.
- Products
-
MediaTek chipset (MT7992)MediaTek chipset (MT7981)MediaTek chipset (MT7993)MediaTek chipset (MT7915)MediaTek chipset (MT6890)MediaTek chipset (MT7990)MediaTek chipset (MT7986)MediaTek chipset (MT7615)MediaTek chipset (MT7916)
- Aliases
-
GHSA-mfvp-3qw7-v5gw
ENISA description: In wlan AP driver, there is a possible memory corruption due to a heap buffer overflow. This could lead to remote (proximal/adjacent) code execution with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00480138; Issue ID: MSV-6295.
EUVD references (1)
Affected products (1)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| MediaTek, Inc. | MediaTek chipset |
MT6890 (affected),
MT7615 (affected),
MT7915 (affected),
MT7916 (affected),
MT7981 (affected),
MT7986 (affected),
MT7990 (affected),
MT7992 (affected),
MT7993 (affected)
|
— |
Affected products — CPE 2.3 (18) 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:mt6890_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt6890:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt7615_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt7615:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt7915_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt7915:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt7916_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt7916:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt7981_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt7981:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt7986_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt7986:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt7990_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt7990:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt7992_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt7992:-:*:*:*:*:*:*:*cpe:2.3:o:mediatek:mt7993_firmware:-:*:*:*:*:*:*:*cpe:2.3:h:mediatek:mt7993:-:*:*:*:*:*:*:*
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-2026-20452 tenable:nvd.nist.gov
- https://www.cve.org/CVERecord?id=CVE-2026-20452 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 (16)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:cybersecuritynews.com
Microsoft's May 2026 Patch Tuesday lands with a heavy enterprise focus, fixing 120 vulnerabilities across Windows, Office, Azure, developer tools, and Microsoft 365 apps, including 29 remote code execution (RCE) flaws rated Critical.
2026-06-08 15:54 UTC -
web:documentation.n-able.com
N-central third-party software patch list The table below lists the third party patches available through Patch Management. The Windows agent communicates with the probe to determine what third-party applications can be updated. The agent obtains a list of applications from the probe and compares it to the software installed on a device. The agent determines what applications on a device need ...
2026-06-08 15:54 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.
2026-06-08 15:54 UTC -
web:techcommunity.microsoft.com
We wanted to tell you how to address the Exchange Server May 2026 vulnerability CVE - 2026 -42897.
2026-06-08 15:54 UTC -
web:thecyberexpress.com
CVE - 2026 -20245 in Cisco Catalyst SD-WAN Manager is under active attack, enabling root command execution with no patch available.
2026-06-08 15:54 UTC -
web:www.crowdstrike.com
Microsoft has released security updates for 130 vulnerabilities, including 30 critical, in its May 2026 Patch Tuesday rollout.
2026-06-08 15:54 UTC -
web:www.oracle.com
Critical Security Patch Updates Critical Security Patch Updates provide security patches for supported Oracle on-premises products. A Critical Security Patch Update provides targeted, high-priority security fixes in a smaller, more focused format, making them easier to apply with minimal disruption.
2026-06-08 15:54 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.
2026-06-08 15:54 UTC -
web:www.tenable.com
Oracle addresses 241 CVEs in its April Critical Patch Update, the second quarterly update of 2026 with 481 patches, including 34 critical updates.
2026-06-08 15:54 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 .
2026-06-08 15:54 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 ...
2026-06-19 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:vulners.com
The CVE-2026-20452 entry concerns memory corruption in the wlan AP driver caused by a heap buffer overflow. Impact is remote (proximal/adjacent) code execution with HIGH confidentiality, integrity, and availability impact, exploitable with adjacen...
2026-06-19 02:31 UTC -
web:www.computerworld.com
Microsoft says it is considering a patch for a zero-day vulnerability, dubbed YellowKey, that allows attackers with access to a Windows device to bypass Bitlocker encryption protection and read ...
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.oracle.com
This Critical Security Patch Update contains 35 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Security Patch Update and other Oracle Software Security Assurance activities is located at May 2026 Critical Security Patch Update: Executive Summary and Analysis.
2026-06-19 02:31 UTC
AI Forensic Analysis
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Raw JSON
The full cvelistV5 record. Download as CVE-2026-20452.json.
{
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"attackVector": "ADJACENT_NETWORK",
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"baseScore": 8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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{
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"title": "CISA ADP Vulnrichment"
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"cna": {
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{
"defaultStatus": "unaffected",
"product": "MediaTek chipset",
"vendor": "MediaTek, Inc.",
"versions": [
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{
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"value": "In wlan AP driver, there is a possible memory corruption due to a heap buffer overflow. This could lead to remote (proximal/adjacent) code execution with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00480138; Issue ID: MSV-6295."
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