vciy

CVE-2023-24955

INDEX BUILT · 2026-09-20

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Microsoft SharePoint Server Remote Code Execution Vulnerability

CVE-2023-249554 of 4 sources documented this
68

rank 68 = 40 + 18 + 0 + 4 + 6

rank@v1 · this cycle

Someone is already using it

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

EPSS 0.85395 · CISA KEV listed  ·  without this subject the record ranks 28

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 7.2, from the CNA  ·  without this subject the record ranks 50

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 68

How much of the world it touches

NVD CPE configurations

2 products in the CPE ranges  ·  without this subject the record ranks 64

Someone else already set the date

CISA KEV remediation due date

CISA remediation date held  ·  without this subject the record ranks 62

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$4.26Mover the next 30 days, if this record is yours
Movement+$149,000on 2025-11-21, the last material move, 9 months before this reading
Basisassumeda published average, not your estate

$4.26M = $4.99M incident cost x 1 exposure x 0.85395 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

0.85395EPSSKEV · LISTED
Severity7.2 HIGHreceipt
Harmtotal loss · ransomware-linkedreceipt
Exploitationransomware use knownreceipt
Defensefix version namedreceipt
Movementthreshold crossedreceipt
PLATEAU10Minimal movement since 2025-03-17, 536 days at 0.85, as of 2026-09-04. arc-rules@v1

Foresight · where to check next

SonicWall SMA1000MicrosoftCVE-2022-41223langflow-aiRejetto HTTP FileCitrix NetScaler24955

This record is one instance of CWE-94, improper control of generation of code ('code injection'). The index holds 7184 prior instances of this class, 78 KEV-listed. The nearest of its KEV-listed records are drawn beside this. taxonomy@v1

Full pattern panel

Prior records in this weakness class. Each is its own record, dated and receipted.
Color is a claim, not decoration:the hostile worldthe defenseno signalspoke length is how much of the record matches, not how bad it is

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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Harm, if it fires from the vector and the weakness

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Reachnetwork-reachable · high privileges required · no user interaction · low attack complexityreceipt
ImpactComplete confidentiality, integrity and availability lossreceipt
Scored fromCVSS v3.1 · the CNA's vectorreceipt
Weakness classCWE-94 Improper Control of Generation of Code ('Code Injection')receipt
Published consequencesCWE-94: Access Control: Bypass Protection Mechanism; Access Control: Gain Privileges or Assume Identity; Integrity, Confidentiality, Availability: Execute Unauthorized Code or Commands…[email protected]
Ransomware campaign useKnown (CISA)receipt

CISA KEV & Federal Remediation Deadline from the record and CISA

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

Fixed in16.0.5395.1000; 16.0.10398.20000; 16.0.16130.20420receipt
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.
CISA remediation statusoverdue since 2024-04-16receipt
CISA required actionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.receipt
Published to CISA KEV322 daysderived

Exploit Status & Known PoCs a ladder, not a score

Current rung: Ransomware campaign use known, 2024-03-26.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published · 1 public repository2023-12-28receipt
  • RUNG 3Exploited in the wild · CISA KEV listed2024-03-26receipt
  • RUNG 4Ransomware campaign use known2024-03-26receipt

Authority who says so

CVSS, the CNA7.2 HIGHreceipt
Exploit probability0.85395 · top 0.29% of all CVEsreceipt
Blast breadth2 products across 1 vendorderived
Assigned bymicrosoftreceipt
Recorded changes105 · last 18 Sep 2026derived

Affected & Fixed Versions as published

Affected productMicrosoft SharePoint Enterprise Server 2016; Microsoft SharePoint Server 2019; Microsoft SharePoint Server Subscription Editionreceipt
Published rangesmicrosoft sharepoint enterprise server 2016; microsoft sharepoint server 2019receipt
Fixed in16.0.5395.1000; 16.0.10398.20000; 16.0.16130.20420receipt

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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Attack path

Network requestrequires high privilegesCISA KEV listingadded 03-26 · due 04-16Microsoft SharePoint Server 2019CWE-94 code injectionFull compromise (C/I/A)C:H / I:H / A:Hmandates remediationexploits CWE-94data compromise

What it is stated by the CNA

Microsoft SharePoint Server Remote Code Execution Vulnerability receipt

NVD's analysis a second authority

weakness
CWE-94
affected versions
microsoft sharepoint enterprise server 2016; microsoft sharepoint server 2019
also scored by
[email protected] 7.2 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

check it yourself msrc.microsoft.com receipt

Dated events

2023-08-16EPSS moved 0.02 to 0.092024-03-26Added to CISA KEV2024-04-16CISA remediation due2025-03-17EPSS moved 0.43 to 0.892026-06-15EPSS moved 0.92 to 0.85

Movement the material steps

10 May 20230.00098
18 Sep 20230.11841 · crossed 0.10
26 Sep 20230.08843 · crossed 0.10
27 Sep 20230.32934 · crossed 0.10
27 Mar 20240.64359 · crossed 0.50
28 Mar 20240.34436 · crossed 0.50
10 Jun 20240.44555
11 Jun 20240.71403 · crossed 0.50
10 Aug 20240.21819 · crossed 0.50
29 Nov 20240.33536
17 Dec 20240.01587 · crossed 0.10
14 Mar 20250.43217 · crossed 0.10
17 Mar 20250.89155 · crossed 0.50 · scoring model v2025.03.14
15 Apr 20250.92092 · crossed 0.90
18 Nov 20250.88468 · crossed 0.90
21 Nov 20250.91453 · crossed 0.90
15 Jun 20260.85395 · crossed 0.90 · scoring model v2026.06.15

This score more than doubled inside 72 hours. Both observations are in the full history below.

Show all 91 observations
10 May 20230.00098
17 May 20230.00189
17 Jun 20230.00563
8 Jul 20230.01116
14 Jul 20230.01234
22 Jul 20230.01122
11 Aug 20230.01584
16 Aug 20230.08765
18 Sep 20230.11841
26 Sep 20230.08843
27 Sep 20230.32934
12 Oct 20230.35956
10 Feb 20240.33613
15 Mar 20240.31168
27 Mar 20240.64359
28 Mar 20240.34436
8 Apr 20240.41963
20 Apr 20240.34515
4 May 20240.41297
15 May 20240.41842
10 Jun 20240.44555
11 Jun 20240.71403
22 Jun 20240.70701
18 Jul 20240.65006
31 Jul 20240.65677
10 Aug 20240.21819
22 Sep 20240.26545
6 Oct 20240.24811
29 Nov 20240.33536
14 Dec 20240.34538
17 Dec 20240.01587
28 Dec 20240.01724
11 Jan 20250.03404
10 Feb 20250.03696
25 Feb 20250.04622
14 Mar 20250.43217
17 Mar 20250.89155
28 Mar 20250.86777
29 Mar 20250.89155
30 Mar 20250.86777
5 Apr 20250.84887
7 Apr 20250.86777
9 Apr 20250.84887
10 Apr 20250.86777
15 Apr 20250.92092
17 Apr 20250.92138
1 May 20250.91782
4 May 20250.92092
27 May 20250.92194
1 Jun 20250.91897
4 Jun 20250.92058
18 Jun 20250.92105
1 Jul 20250.91744
4 Jul 20250.92058
1 Aug 20250.91744
4 Aug 20250.92058
21 Aug 20250.92105
22 Aug 20250.9228
1 Sep 20250.91994
4 Sep 20250.92105
5 Sep 20250.92238
6 Sep 20250.92194
15 Sep 20250.92058
19 Sep 20250.92105
1 Oct 20250.91797
2 Oct 20250.91446
4 Oct 20250.91794
22 Oct 20250.917
29 Oct 20250.91251
1 Nov 20250.90833
4 Nov 20250.91251
17 Nov 20250.91453
18 Nov 20250.88468
21 Nov 20250.91453
1 Dec 20250.91062
4 Dec 20250.91453
1 Jan 20260.91062
4 Jan 20260.91453
10 Jan 20260.91622
20 Jan 20260.91677
1 Feb 20260.91314
2 Feb 20260.91252
4 Feb 20260.91622
7 Feb 20260.9176
1 Mar 20260.91407
4 Mar 20260.9176
8 Mar 20260.91622
23 Apr 20260.91677
6 May 20260.91622
10 May 20260.91789
15 Jun 20260.85395

91 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 0.85395Published2023-05-09Public PoC2023-12-28CISA KEV2024-03-26Index as of2026-09-04

Listed by CISA 322 days after it published, exploit probability more than doubled between 2023-09-26 and 2023-09-27 (0.08843 → 0.32934) and the record had been public for 3 years, 3 months when this index was last written.

No material movement in 81 days as of the last ingest this index recorded.

Published 2023-05-09 receipt · Public PoC 2023-12-28 receipt · CISA KEV 2024-03-26 receipt · Index as of 2026-09-04 derived

The pattern, elsewhere

This record is one instance of CWE-94, improper control of generation of code ('code injection'). The index holds 7184 prior instances of this class, 78 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2026-15410 · SonicWall SMA1000matches 8 of 9KEV listed · 2026receipt
CVE-2025-49704 · Microsoft SharePoint Enterprise Server 2016matches 8 of 9KEV listed · 2025receipt
CVE-2022-41223matches 7 of 8KEV listed · 2022receipt
CVE-2025-3248 · langflow-ai langflowmatches 7 of 9KEV listed · 2025receipt
CVE-2024-23692 · Rejetto HTTP File Servermatches 7 of 9KEV listed · 2024receipt
CVE-2023-3519 · Citrix NetScaler ADCmatches 7 of 9KEV listed · 2023receipt

"Matches n of m" counts the attributes the two records can both be compared on: the CVSS metrics they share a version of, any weakness class beyond this one, and the vendor. fit-rules@v1

7184 records in this class held. The six above are drawn from the ones CISA has listed as exploited, ranked by how much of the record matches this one. That is why every one of them is KEV-listed: the pool is, so the colour on those spokes says nothing the pool has not already said.

No curated product neighbourhood is held for this product, so the records above are the nearest this index can name. The neighbourhood table covers a small set of products and is extended by hand.

Siblings and hubs

Records related to this one

Its defect family

microsoft sharepoint enterprise server 2016

Of the 7 records in this family, this is the only one holding a CISA KEV listing: Microsoft SharePoint Server Code Injection Vulnerability.

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

Family membership: held values

This record is one of a group, and the group's page describes all of them. This page is kept and dated, and the defect family's own page is the one we offer for indexing: the whole group.

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