vciy

CVE-2019-0841

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.

An elevation of privilege vulnerability exists when Windows AppX Deployment Service (AppXSVC) improperly handles hard links, aka 'Windows Elevation…

CVE-2019-08414 of 4 sources documented this
68

rank 68 = 40 + 20 + 0 + 2 + 6

rank@v1 · this cycle

Someone is already using it

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

EPSS 0.41400 · 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 7.8, from NVD  ·  without this subject the record ranks 48

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

1 product in the CPE ranges  ·  without this subject the record ranks 66

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$2.07Mover the next 30 days, if this record is yours
Movement-$2.34Mon 2022-02-04, the last material move, 4 years, 7 months before this reading
Basisassumeda published average, not your estate

$2.07M = $4.99M incident cost x 1 exposure x 0.414 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

0.414EPSSKEV · LISTED
Severity7.8 HIGHreceipt
Harmtotal loss · ransomware-linkedreceipt
Exploitationransomware use knownreceipt
Defenseno fix version held
Movementfallenreceipt
PLATEAU10Minimal movement since 2026-06-15, 81 days at 0.41, as of 2026-09-04. arc-rules@v1

Foresight · where to check next

Microsoft WindowsMicrosoft WindowsMicrosoft WindowsMicrosoft Windows0841

This record is one instance of CWE-59, improper link resolution before file access ('link following'). The index holds 1732 prior instances of this class, 24 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? 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 · NVD's vectorreceipt
Weakness classCWE-59 Improper Link Resolution Before File Access ('Link Following')receipt
Published consequencesCWE-59: Confidentiality, Integrity, Access Control: Read Files or Directories, Modify Files or Directories, Bypass Protection Mechanism; Other: 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 inNo fix version in held sources, as the index stood on 4 Sep 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.
CISA remediation statusoverdue since 2022-04-05receipt
CISA required actionApply updates per vendor instructions.receipt
Published to CISA KEV1071 daysderived

Exploit Status & Known PoCs a ladder, not a score

Current rung: Ransomware campaign use known, 2022-03-15.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published · 4 public repositories2019-04-05receipt
  • RUNG 3Exploited in the wild · CISA KEV listed2022-03-15receipt
  • RUNG 4Ransomware campaign use known2022-03-15receipt

Authority who says so

CVSS, NVD7.8 HIGHreceipt
Exploit probability0.414 · top 1% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned bymicrosoftreceipt
Recorded changes63 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productMicrosoft Windows; Microsoft Windows Serverreceipt
Published rangesmicrosoft windows server 2016 1803receipt

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.

What it is stated by the CNA

An elevation of privilege vulnerability exists when Windows AppX Deployment Service (AppXSVC) improperly handles hard links, aka 'Windows Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-0730, CVE-2019-0731, CVE-2019-0796, CVE-2019-0805, CVE-2019-0836. receipt

NVD's analysis a second authority

severity
7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
weakness
CWE-59
affected versions
microsoft windows server 2016 1803
also scored by
7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

check it yourself portal.msrc.microsoft.com exploit-db.com packetstormsecurity.com zerodayinitiative.com packetstormsecurity.com packetstormsecurity.com +2 morereceipt

Dated events

2021-09-14EPSS moved 0.88 to 0.492022-03-15Added to CISA KEV2022-04-05CISA remediation due2023-03-07EPSS moved 0.40 to 0.892026-06-15EPSS moved 0.83 to 0.42

Movement the material steps

14 Apr 20210.87805
14 Sep 20210.49353 · crossed 0.50
16 Sep 20210.87805 · crossed 0.50
4 Feb 20220.40935 · crossed 0.50
7 Mar 20230.88913 · crossed 0.50 · scoring model v2023.03.01
17 Mar 20250.83513 · scoring model v2025.03.14
15 Jun 20260.41667 · crossed 0.50 · scoring model v2026.06.15
2 Jul 20260.414
Show all 49 observations
14 Apr 20210.87805
14 Sep 20210.49353
16 Sep 20210.87805
4 Feb 20220.40935
4 Oct 20220.39806
7 Mar 20230.88913
16 Mar 20230.87396
21 Mar 20230.85510
16 Apr 20230.85894
3 May 20230.84151
8 May 20230.85534
19 May 20230.89256
4 Jun 20230.88580
19 Jun 20230.88631
5 Jul 20230.88271
8 Jul 20230.87197
21 Aug 20230.85679
5 Sep 20230.89679
20 Sep 20230.87528
21 Oct 20230.88343
5 Dec 20230.86855
29 Feb 20240.86700
2 Apr 20240.86552
17 Dec 20240.84549
22 Jan 20250.82325
16 Feb 20250.83635
17 Mar 20250.83513
18 Mar 20250.83695
19 Mar 20250.83493
20 Mar 20250.83161
27 Mar 20250.84153
28 Mar 20250.85917
29 Mar 20250.84153
30 Mar 20250.85917
20 Apr 20250.85993
23 Apr 20250.85917
18 Jun 20250.86081
1 Jul 20250.85917
14 Sep 20250.85183
15 Sep 20250.8483
22 Oct 20250.80798
18 Nov 20250.81068
21 Nov 20250.80798
31 Dec 20250.82809
23 Jan 20260.8265
18 Feb 20260.82874
24 Feb 20260.8265
15 Jun 20260.41667
2 Jul 20260.414

49 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 0.414Public PoC2019-04-05Published2019-04-09CISA KEV2022-03-15Index as of2026-09-04

Listed by CISA 1071 days after it published and the record had been public for 7 years, 4 months when this index was last written.

No material movement in 64 days as of the last ingest this index recorded.

Public PoC 2019-04-05 receipt · Published 2019-04-09 receipt · CISA KEV 2022-03-15 receipt · Index as of 2026-09-04 derived

The pattern, elsewhere

This record is one instance of CWE-59, improper link resolution before file access ('link following'). The index holds 1732 prior instances of this class, 24 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2025-60710 · Microsoft Windows 11 Version 24H2matches 9 of 9KEV listed · 2025receipt
CVE-2022-21999 · Microsoft Windows 10 Version 1809matches 9 of 9KEV listed · 2022receipt
CVE-2020-0638 · Microsoft Windowsmatches 9 of 9KEV listed · 2020receipt
CVE-2019-1064 · Microsoft Windows 10 Version 1703matches 9 of 9KEV listed · 2019receipt
CVE-2019-1069 · Microsoft Windows 10 Version 1703matches 9 of 9KEV listed · 2019receipt
CVE-2019-1129 · Microsoft Windowsmatches 9 of 9KEV listed · 2019receipt

"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

1732 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-2019-0841.

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.