CVE-2020-0796

CRITICALNVD 10.010.0—Trending — 4 sources updated this weekExploited in the wild

10.0

A remote code execution vulnerability exists in the way that the Microsoft Server Message Block 3.1.1 (SMBv3) protocol handles certain requests, aka 'Windows SMBv3 Client/Server Remote Code Execution Vulnerability'.

CVSS v3: 10.0
EG Score: 10.0(medium)
EPSS: 100.0%
KEV: ⚠ Exploited

Published

March 12, 2020

Last Modified

October 29, 2025

Advisory Details (4)

Auto-updated May 23, 2026

Patch available. Sources: microsoft.

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-2020-0796

generic

Packet Storm

http://packetstormsecurity.com/files/158054/SMBleed-SMBGhost-Pre-Authentication-Remote-Code-Execution-Proof-Of-Concept.html

generic

Packet Storm

http://packetstormsecurity.com/files/157901/Microsoft-Windows-SMBGhost-Remote-Code-Execution.html

generic

Packet Storm

http://packetstormsecurity.com/files/157110/SMBv3-Compression-Buffer-Overflow.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-2020-07962020-03-12
Windows SMBv3 Client/Server Remote Code Execution Vulnerability

Data Freshness Timeline

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

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-10 06:59 UTCEG score recompute
2026-06-10 06:59 UTCVendor advisory
2026-06-10 06:59 UTCGHSA enrichment
2026-06-10 02:55 UTCEG score recompute
2026-06-10 02:55 UTCVendor advisory
2026-06-10 02:55 UTCGHSA enrichment
2026-06-09 22:51 UTCEG score recompute
2026-06-09 22:51 UTCVendor advisory
2026-06-09 22:51 UTCGHSA enrichment
2026-06-09 18:49 UTCEG score recompute
2026-06-09 18:49 UTCVendor advisory
2026-06-09 18:49 UTCGHSA enrichment
2026-06-09 18:42 UTCCISA KEV update
2026-06-09 17:12 UTCCISA KEV update
2026-06-09 14:46 UTCEG score recompute
2026-06-09 14:46 UTCVendor advisory
2026-06-09 14:46 UTCGHSA enrichment
2026-06-09 10:43 UTCEG score recompute
2026-06-09 10:43 UTCVendor advisory
2026-06-09 10:43 UTCGHSA enrichment

Publicly available exploits

(10 references)

Working exploit code is in the public domain (7 GitHub PoCs) (3 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

GitHub PoCrsmudge/CVE-2020-0796-BOF
First seen Sep 17, 2020
Open source ↗
GitHub PoCBarriuso/SMBGhost_AutomateExploitation
First seen Jun 10, 2020
SMBGhost (CVE-2020-0796) Automate Exploitation and Detection
Open source ↗
Exploit-DBEDB-48537
First seen Jun 2, 2020
Microsoft Windows - 'SMBGhost' Remote Code Execution
Open source ↗
GitHub PoCjamf/CVE-2020-0796-RCE-POC
First seen Apr 20, 2020
CVE-2020-0796 Remote Code Execution POC
Open source ↗
GitHub PoCRvn0xsy/CVE_2020_0796_CNA
First seen Apr 6, 2020
Cobalt Strike AggressorScripts CVE-2020-0796
Open source ↗
GitHub PoCjiansiting/CVE-2020-0796
First seen Apr 1, 2020
Open source ↗
Exploit-DBEDB-48267
First seen Mar 30, 2020
Microsoft Windows 10 (1903/1909) - 'SMBGhost' SMB3.1.1 'SMB2_COMPRESSION_CAPABILITIES' Local Privilege Escalation
Open source ↗
GitHub PoCdanigargu/CVE-2020-0796
First seen Mar 30, 2020
CVE-2020-0796 - Windows SMBv3 LPE exploit #SMBGhost
Open source ↗
GitHub PoCjamf/CVE-2020-0796-LPE-POC
First seen Mar 30, 2020
CVE-2020-0796 Local Privilege Escalation POC
Open source ↗
Exploit-DBEDB-48216
First seen Mar 14, 2020
Microsoft Windows 10 (1903/1909) - 'SMBGhost' SMB3.1.1 'SMB2_COMPRESSION_CAPABILITIES' Buffer Overflow (PoC)
Open source ↗

Frequently asked(6)

What is CVE-2020-0796?

CVE-2020-0796 is a critical vulnerability published on March 12, 2020. A remote code execution vulnerability exists in the way that the Microsoft Server Message Block 3.1.1 (SMBv3) protocol handles certain requests, aka 'Windows SMBv3 Client/Server Remote Code Execution Vulnerability'.

When was CVE-2020-0796 disclosed?

CVE-2020-0796 was first published in the National Vulnerability Database on March 12, 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-2020-0796 actively exploited?

Yes. CISA added CVE-2020-0796 to the Known Exploited Vulnerabilities catalog on February 10, 2022, affecting Microsoft SMBv3. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.

What is the CVSS score of CVE-2020-0796?

CVE-2020-0796 has a CVSS v3 base score of 10.0 (NVD).

Which products are affected by CVE-2020-0796?

CVE-2020-0796 affects Microsoft SMBv3. 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-2020-0796?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-0796, 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-2020-0796

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CVE-2020-0796

Published

Last Modified

Advisory Details (4)

Security Update Guide - Microsoft Security Response Center

Packet Storm

Packet Storm

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-2020-0796?

Same vendor

Same CWE

CVE-2020-0796

📅 Published

🔄 Last Modified

📋 Advisory Details (4)

Security Update Guide - Microsoft Security Response Center

Packet Storm

Packet Storm

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-2020-0796?

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Frequently asked(6)

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