SARA / Free Tools / KEV / CVE-2020-0796

CVE-2020-0796: Used in ransomware campaigns — CISA KEV

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'.

CISA KEV — Actively Exploited

A remote code execution vulnerability exists in the way that the Microsoft Server Message Block 3

Vendor / Product
— / Microsoft / SMBv3
Added to KEV
2022-02-10
BOD 22-01 due
—
Ransomware use
Known
CVSS / EPSS
10.0 CRITICAL · EPSS 99.81%

01What CISA says about this vulnerability

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'.

02Required action — verbatim from CISA

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

03Notes & references

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

No structured affected-product list available — see references below for vendor advisories.

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

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