vciy

CVE-2023-36802

INDEX BUILT · 2026-09-20

No source can show you its own past. This one can.

Print this page to keep the view as it stands on this date. Everything hidden behind a disclosure opens, and every receipt prints with its value.

Microsoft Streaming Service Proxy Elevation of Privilege Vulnerability

CVE-2023-368024 of 4 sources documented this
75

rank 75 = 40 + 20 + 2 + 7 + 6

rank@v1 · act now

Someone is already using it

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

EPSS 0.27909 · CISA KEV listed  ·  without this subject the record ranks 35

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 7.8, from the CNA  ·  without this subject the record ranks 55

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

rose on 2025-11-21  ·  without this subject the record ranks 73

How much of the world it touches

NVD CPE configurations

7 products in the CPE ranges  ·  without this subject the record ranks 68

Someone else already set the date

CISA KEV remediation due date

CISA remediation date held  ·  without this subject the record ranks 69

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$1.39Mover the next 30 days, if this record is yours
Movementno material movementthe record holds only daily drift and scoring model releases
Basisassumeda published average, not your estate

$1.39M = $4.99M incident cost x 1 exposure x 0.27909 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

0.27909EPSSKEV · LISTED
Severity7.8 HIGHreceipt
Harmtotal lossreceipt
Exploitationin the wild · KEVreceipt
Defensefix version namedreceipt
Movementrisenreceipt
PLATEAU10Minimal movement since 2026-06-15, 91 days at 0.28, as of 2026-09-14. arc-rules@v1

Foresight · where to check next

Microsoft WindowsMicrosoft WindowsMicrosoft Windows36802

This record is one instance of CWE-416, use after free. The index holds 8701 prior instances of this class, 106 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 Windows 10 Version 1809? 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.

Watch this record

Matches your own product list against every record this index holds, and tells you when one of them moves.

What counts as a move

Set up a watchlist (needs a Practitioner account)

Record your call

Keep your verdict, your reason and the evidence together. The record takes its date when you save it.

AcceptDeferPatch by…Not affectedMitigated

Choose your verdict, then sign in or use an email link. Your first 100 records are free. Evidence is frozen when the record is created.

Private to your organization unless you share it. Put the proof link in your ticket so a reviewer can inspect the basis for your call. See how decision records work.

Harm, if it fires from the vector and the weakness

Written for the ticket you're about to file.

Reachneeds local access · low privileges required · no user interaction · low attack complexityreceipt
ImpactComplete confidentiality, integrity and availability lossreceipt
Scored fromCVSS v3.1 · the CNA's vectorreceipt
Weakness classCWE-416 Use After Freereceipt
Published consequencesCWE-416: Integrity: Modify Memory; Availability: DoS: Crash, Exit, or Restart; Confidentiality: Read Memory; Integrity, Confidentiality, Availability: Execute Unauthorized Code or Commands[email protected]
Ransomware campaign useUnknown to CISAreceipt

CISA KEV & Federal Remediation Deadline from the record and CISA

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

Fixed in10.0.17763.4851; 10.0.20348.1970; 10.0.22000.2416; 10.0.19044.3448; 10.0.22621.2283; 10.0.19045.3448receipt
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 2023-10-03receipt
CISA required actionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.receipt
Published to CISA KEVsame dayderived

Exploit Status & Known PoCs a ladder, not a score

Current rung: Exploited in the wild · CISA KEV listed, 2023-09-12.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published · 6 public repositories2023-10-09receipt
  • RUNG 3Exploited in the wild · CISA KEV listed2023-09-12receipt
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, the CNA7.8 HIGHreceipt
Exploit probability0.27909 · top 2% of all CVEsreceipt
Blast breadth2 products across 1 vendorderived
Assigned bymicrosoftreceipt
Recorded changes68 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productMicrosoft Windows 10 Version 1809; Microsoft Windows Server 2019; Microsoft Windows Server 2019 (Server Core installation); Microsoft Windows Server 2022; Microsoft Windows 11 version 21H2…receipt
Published rangesmicrosoft windows 10 1809 < 10.0.17763.4851; microsoft windows 10 21h2 < 10.0.19044.3448; microsoft windows 10 22h2 < 10.0.19045.3448; microsoft windows 11 21h2 < 10.0.22000.2416receipt
Show all 7 published ranges
microsoft windows 10 1809 < 10.0.17763.4851
microsoft windows 10 21h2 < 10.0.19044.3448
microsoft windows 10 22h2 < 10.0.19045.3448
microsoft windows 11 21h2 < 10.0.22000.2416
microsoft windows 11 22h2 < 10.0.22621.2275
microsoft windows server 2019 < 10.0.17763.4851
microsoft windows server 2022 < 10.0.20348.1970
Fixed in10.0.17763.4851; 10.0.20348.1970; 10.0.22000.2416; 10.0.19044.3448; 10.0.22621.2283; 10.0.19045.3448receipt

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.

Did this affect your environment?Answering needs an account.

Attack path

Local accessrequires low privilegesCISA KEV listingadded 09-12 · due 10-03Microsoft Windows Server 2019CWE-416 use after freeFull compromise (C/I/A)C:H / I:H / A:Hmandates remediationexploits CWE-416data compromise

What it is stated by the CNA

Microsoft Streaming Service Proxy Elevation of Privilege Vulnerability receipt

NVD's analysis a second authority

weakness
CWE-416
affected versions
microsoft windows 10 1809 < 10.0.17763.4851; microsoft windows 10 21h2 < 10.0.19044.3448; microsoft windows 10 22h2 < 10.0.19045.3448; and 4 more, listed in full below
also scored by
[email protected] 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

check it yourself msrc.microsoft.com receipt

Dated events

2023-09-12Added to CISA KEV2023-10-03CISA remediation due2025-03-17EPSS moved 0.01 to 0.642026-06-15EPSS moved 0.75 to 0.26

Movement the material steps

13 Sep 20230.00144
17 Mar 20250.64129 · crossed 0.10 and 0.50 · scoring model v2025.03.14
16 Jul 20250.75007
15 Jun 20260.261 · crossed 0.50 · scoring model v2026.06.15
14 Sep 20260.27909
Show all 54 observations
13 Sep 20230.00144
15 Sep 20230.00051
18 Sep 20230.00043
11 Oct 20230.00054
2 Jun 20240.00113
15 Jun 20240.00080
8 Jul 20240.00113
12 Aug 20240.00229
15 Aug 20240.00382
24 Aug 20240.00334
7 Sep 20240.02786
18 Sep 20240.00606
1 Oct 20240.00627
14 Oct 20240.03013
26 Oct 20240.00495
8 Nov 20240.00936
21 Nov 20240.00359
4 Dec 20240.01520
17 Dec 20240.02249
30 Dec 20240.04943
13 Jan 20250.06377
26 Jan 20250.01460
9 Feb 20250.00932
7 Mar 20250.00981
17 Mar 20250.64129
19 Mar 20250.73331
20 Mar 20250.64129
27 Mar 20250.73331
28 Mar 20250.64129
29 Mar 20250.73331
30 Mar 20250.64129
15 Apr 20250.69335
17 Apr 20250.689
4 May 20250.72182
5 May 20250.69883
21 May 20250.72182
16 Jun 20250.72574
29 Jun 20250.72182
30 Jun 20250.73204
16 Jul 20250.75007
15 Sep 20250.74002
30 Sep 20250.73961
22 Oct 20250.73783
29 Oct 20250.78911
15 Nov 20250.77201
18 Nov 20250.67983
21 Nov 20250.78911
5 Feb 20260.77297
22 Feb 20260.75434
28 Mar 20260.75778
10 Apr 20260.75434
15 Jun 20260.261
6 Sep 20260.27451
14 Sep 20260.27909

54 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 0.27909Published · CISA KEV2023-09-12Public PoC2023-10-09Index as of2026-09-14

Listed by CISA on the day it published and the record had been public for 3 years when this index was last written.

Published 2023-09-12 receipt · CISA KEV 2023-09-12 receipt · Public PoC 2023-10-09 receipt · Index as of 2026-09-14 derived

The pattern, elsewhere

This record is one instance of CWE-416, use after free. The index holds 8701 prior instances of this class, 106 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2025-29824 · Microsoft Windows 10 Version 1507matches 9 of 9KEV listed · 2025receipt
CVE-2021-40449 · Microsoft Windows 10 Version 1809matches 9 of 9KEV listed · 2021receipt
CVE-2025-21334 · Microsoft Windows 10 Version 21H2matches 9 of 9KEV listed · 2025receipt
CVE-2025-21335 · Microsoft Windows 10 Version 21H2matches 9 of 9KEV listed · 2025receipt
CVE-2025-30400 · Microsoft Windows 10 Version 1809matches 9 of 9KEV listed · 2025receipt
CVE-2025-32701 · Microsoft Windows 10 Version 1507matches 9 of 9KEV listed · 2025receipt

"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

8701 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

Browse the index from here

These are index-wide views, not findings about CVE-2023-36802.

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.