CVE-2020-1054

HIGHNVD 7.89.0▲Trending — 5 sources updated this weekExploited in the wild

7.8

An elevation of privilege vulnerability exists in Windows when the Windows kernel-mode driver fails to properly handle objects in memory, aka 'Win32k Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-1143.

CVSS v3: 7.8
EG Score: 9.0(high)
EPSS: 99.2%
KEV: ⚠ Exploited

Published

May 21, 2020

Last Modified

October 29, 2025

Advisory Details (3)

Auto-updated Jun 3, 2026

⚠️ Active exploitation confirmed. Patch available. Sources: cisa, microsoft.

cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1054

microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1054

generic

Packet Storm

http://packetstormsecurity.com/files/160515/Microsoft-Windows-DrawIconEx-Local-Privilege-Escalation.html

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Microsoft MSRCCVE-2020-10542020-05-12
Win32k Elevation of Privilege Vulnerability

Data Freshness Timeline

(refreshed 20× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-04 13:20 UTCEG score recompute
2026-06-04 13:20 UTCVendor advisory
2026-06-04 13:20 UTCGHSA enrichment
2026-06-04 13:10 UTCepss_batch
2026-06-04 13:10 UTCepss_batch
2026-06-04 09:17 UTCEG score recompute
2026-06-04 09:17 UTCVendor advisory
2026-06-04 09:17 UTCGHSA enrichment
2026-06-04 05:14 UTCEG score recompute
2026-06-04 05:14 UTCVendor advisory
2026-06-04 05:14 UTCGHSA enrichment
2026-06-04 01:11 UTCEG score recompute
2026-06-04 01:11 UTCVendor advisory
2026-06-04 01:11 UTCGHSA enrichment
2026-06-03 21:08 UTCEG score recompute
2026-06-03 21:08 UTCVendor advisory
2026-06-03 21:08 UTCGHSA enrichment
2026-06-03 19:09 UTCkev_newly_listed
2026-06-03 17:05 UTCEG score recompute
2026-06-03 17:05 UTCVendor advisory

Publicly available exploits

(4 references)

Working exploit code is in the public domain (1 Metasploit module) (3 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

GitHub PoCKaLendsi/CVE-2020-1054
First seen Jul 25, 2020
Open source ↗
GitHub PoCIamgublin/CVE-2020-1054
First seen Jul 19, 2020
Open source ↗
GitHub PoC0xeb-bp/cve-2020-1054
First seen Jun 16, 2020
LPE for CVE-2020-1054 targeting Windows 7 x64
Open source ↗
Metasploitexploit/windows/local/cve_2020_1054_drawiconex_lpe✓ verified
First seen Feb 20, 2020
Microsoft Windows DrawIconEx OOB Write Local Privilege Elevation
Open source ↗

Frequently asked(6)

What is CVE-2020-1054?

CVE-2020-1054 is a high vulnerability published on May 21, 2020. An elevation of privilege vulnerability exists in Windows when the Windows kernel-mode driver fails to properly handle objects in memory, aka 'Win32k Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-1143.

When was CVE-2020-1054 disclosed?

CVE-2020-1054 was first published in the National Vulnerability Database on May 21, 2020, with the most recent update on October 29, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-1054 actively exploited?

Yes. CISA added CVE-2020-1054 to the Known Exploited Vulnerabilities catalog on November 3, 2021, affecting Microsoft Win32k. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.

What is the CVSS score of CVE-2020-1054?

CVE-2020-1054 has a CVSS v3 base score of 7.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.

Which products are affected by CVE-2020-1054?

CVE-2020-1054 affects Microsoft Win32k. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.

How do I remediate CVE-2020-1054?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-1054, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2020-1054

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Is Your Infrastructure Affected by CVE-2020-1054?

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CVE-2020-1054

Published

Last Modified

Advisory Details (3)

Known Exploited Vulnerabilities Catalog | CISA

Security Update Guide - Microsoft Security Response Center

Packet Storm

Weakness Classification(2)

All Vendor Advisories

Data Freshness Timeline

Publicly available exploits

Frequently asked(6)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-1054?

Same vendor

Same CWE

CVE-2020-1054

📅 Published

🔄 Last Modified

📋 Advisory Details (3)

Known Exploited Vulnerabilities Catalog | CISA

Security Update Guide - Microsoft Security Response Center

Packet Storm

Weakness Classification(2)

All Vendor Advisories

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(6)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-1054?

🔗 Related CVEs(same vendor + same CWE)

Same vendor

Same CWE

Published

Last Modified

Advisory Details (3)

Frequently asked(6)

Related CVEs(same vendor + same CWE)