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CVE-2020-1181

INDEX BUILT · 2026-09-20

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A remote code execution vulnerability exists in Microsoft SharePoint Server when it fails to properly identify and filter unsafe ASP.Net web…

CVE-2020-11814 of 4 sources documented this
44

rank 44 = 17 + 22 + 0 + 5 + 0

rank@v1 · scheduled

Someone is already using it

CISA KEV catalog · public proof-of-concept · FIRST EPSS

EPSS 0.69303  ·  without this subject the record ranks 27

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 8.8, from NVD  ·  without this subject the record ranks 22

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

no persisting rise in 365 days  ·  without this subject the record ranks 44

How much of the world it touches

NVD CPE configurations

4 products in the CPE ranges  ·  without this subject the record ranks 39

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 44

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$3.46Mover the next 30 days, if this record is yours
Movement+$528,000on 2025-11-21, the last material move, 7 months before this reading
Basisassumeda published average, not your estate

$3.46M = $4.99M incident cost x 1 exposure x 0.69303 likelihood

udv@v1 · unaudited · wrong for you until you say what you run

$4.99M is the cost of a breach that happened, from IBM Cost of a Data Breach Report 2026, global average. It is not the value of any asset of yours. That average already covers breaches of every severity, so scaling it by exposure understates a partial-impact record. That is an assumption, not a measurement. Your own asset value goes in the decision record.

Hindsight · the state

0.69303EPSSNOT IN KEVas of 2026-09-20
Severity8.8 HIGHreceipt
Harmtotal lossreceipt
Exploitationnone in held sources
Defenseno fix version held
Movementrisenreceipt
RISING10Risen from 0.14478 to 0.69303 across 31 observations. arc-rules@v1

Foresight · where to check next

No weakness class or product neighbourhood is held for this record, so this index cannot name anywhere to check next. That is an absence in the record, not a finding about the software.

Color is a claim, not decoration:the hostile worldthe defenseno signal

Running Microsoft SharePoint Enterprise Server? Check your version

A deterministic range check against the ranges this record publishes. It tells you where a version sits in the record, not whether your deployment is exploitable. No account needed.

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What counts as a move

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Record your call

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AcceptDeferPatch by…Not affectedMitigated

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Harm, if it fires from the vector and the weakness

Written for the ticket you're about to file.

Reachnetwork-reachable · low privileges required · no user interaction · low attack complexityreceipt
ImpactComplete confidentiality, integrity and availability lossreceipt
Scored fromCVSS v3.1 · NVD's vectorreceipt
Weakness classNo CWE mapping in held sources.

CISA KEV & Federal Remediation Deadline from the record and CISA

The fix, and how long it's been waiting.

Fixed inNo fix version in held sources, as the index stood on 27 Jun 2026.
Patch available sinceNo dated patch-availability record in held sources. The index holds reference URLs without dates and only the current revision of the CVE record, so the day a fix first existed cannot be derived. Only the versions it landed in.

Exploit Status & Known PoCs a ladder, not a score

Current rung: Nothing observed in held sources.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published
  • RUNG 3Exploited in the wild · CISA KEV listed
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, NVD8.8 HIGHreceipt
Exploit probability0.69303 · top 0.67% of all CVEsreceipt
Blast breadth3 products across 1 vendorderived
Assigned bymicrosoftreceipt
Recorded changes31 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productMicrosoft SharePoint Enterprise Server; Microsoft SharePoint Server; Microsoft SharePoint Foundationreceipt
Published rangesmicrosoft sharepoint enterprise server 2016; microsoft sharepoint foundation 2010; microsoft sharepoint foundation 2013; microsoft sharepoint server 2019receipt

A rung lights from a row in the index, never from an assessment. "Held sources" is the true scope of the claim: this index reads the CVE record, NVD, CISA KEV, FIRST's EPSS and public proof-of-concept repositories, and it does not observe attacks.

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What it is stated by the CNA

A remote code execution vulnerability exists in Microsoft SharePoint Server when it fails to properly identify and filter unsafe ASP.Net web controls, aka 'Microsoft SharePoint Server Remote Code Execution Vulnerability'. receipt

NVD's analysis a second authority

severity
8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
affected versions
microsoft sharepoint enterprise server 2016; microsoft sharepoint foundation 2010; microsoft sharepoint foundation 2013; and 1 more, listed in full below

check it yourself portal.msrc.microsoft.com zerodayinitiative.com receipt

Dated events

2022-01-06EPSS moved 0.14 to 0.432026-06-15EPSS moved 0.51 to 0.71

Movement the material steps

14 Apr 20210.14478
6 Jan 20220.43169
4 Feb 20220.24132
1 Apr 20220.04328 · crossed 0.10
7 Mar 20230.18501 · crossed 0.10 · scoring model v2023.03.01
13 Jun 20230.33695
17 Dec 20240.20253
17 Mar 20250.48274 · scoring model v2025.03.14
25 Mar 20250.50732 · crossed 0.50
18 Nov 20250.40167 · crossed 0.50
21 Nov 20250.5074 · crossed 0.50
15 Jun 20260.71028 · scoring model v2026.06.15
27 Jun 20260.69303
Show all 31 observations
14 Apr 20210.14478
6 Jan 20220.43169
4 Feb 20220.24132
1 Apr 20220.04328
1 Feb 20230.04685
7 Mar 20230.18501
21 Mar 20230.23488
5 Apr 20230.18042
16 May 20230.21149
29 May 20230.26593
13 Jun 20230.33695
27 Aug 20230.36765
11 Sep 20230.34894
13 Oct 20230.31140
28 Oct 20230.25835
25 Feb 20240.36383
29 Mar 20240.36353
16 May 20240.29686
17 Dec 20240.20253
17 Mar 20250.48274
25 Mar 20250.50732
29 Mar 20250.53019
30 Mar 20250.50732
11 Jun 20250.50181
6 Aug 20250.5074
18 Nov 20250.40167
21 Nov 20250.5074
17 Mar 20260.52628
27 May 20260.5074
15 Jun 20260.71028
27 Jun 20260.69303

31 observations held. A highlighted step crossed a promotion threshold. A step marked with a scoring model moved because the instrument was replaced, not because the vulnerability changed. receipt

The full biography

EPSS 0.69303Published2020-06-09Index as of2026-06-27

The record had been public for 6 years when this index was last written.

Published 2020-06-09 receipt · Index as of 2026-06-27 derived

Siblings and hubs

Records related to this one

Its defect family

microsoft sharepoint enterprise server

Grouped by shared product and weakness, not by shared vulnerability. Each record's own state is on its own page.

Family membership: computed, pro@dim2000

Nothing we hold separates this record from the others in its defect family. This page is kept and dated, and the defect family's own page is the one we offer for indexing: the whole group.

Browse the index from here

These are index-wide views, not findings about CVE-2020-1181.

What usually comes next

Everything above needs no account. What is below is work: assembling it, scoping it to your estate, watching it, and handing it to someone else.

Everything on this page is free. Public data. Withholding it protects nothing.