vciy

CVE-2019-0940

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.

A remote code execution vulnerability exists in the way that Microsoft browsers access objects in memory, aka 'Microsoft Browser Memory Corruption…

CVE-2019-09404 of 4 sources documented this
31

rank 31 = 6 + 19 + 2 + 4 + 0

rank@v1 · scheduled

Someone is already using it

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

EPSS 0.23102  ·  without this subject the record ranks 25

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 7.5, from NVD  ·  without this subject the record ranks 12

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

rose on 2025-09-14  ·  without this subject the record ranks 29

How much of the world it touches

NVD CPE configurations

2 products in the CPE ranges  ·  without this subject the record ranks 27

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 31

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$1.15Mover the next 30 days, if this record is yours
Movement+$324,000on 2026-05-10, the last material move, 3 months before this reading
Basisassumeda published average, not your estate

$1.15M = $4.99M incident cost x 1 exposure x 0.23102 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

0.23102EPSSNOT IN KEVas of 2026-09-20
Severity7.5 HIGHreceipt
Harmtotal lossreceipt
Exploitationnone in held sources
Defenseno fix version held
Movementrisenreceipt
PLATEAU10Minimal movement since 2026-06-15, 83 days at 0.23, as of 2026-09-06. arc-rules@v1

Foresight · where to check next

MicrosoftGoogle ChromeIvanti ConnectFortinet0940

This record is one instance of CWE-787, out-of-bounds write. The index holds 14893 prior instances of this class, 164 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 Internet Explorer 11? 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.

Reachnetwork-reachable · no privileges required · user interaction required · high attack complexityreceipt
ImpactComplete confidentiality, integrity and availability lossreceipt
Scored fromCVSS v3.0 · NVD's vectorreceipt
Weakness classCWE-787 Out-of-bounds Writereceipt
Published consequencesCWE-787: Integrity: Modify Memory, Execute Unauthorized Code or Commands; Availability: DoS: Crash, Exit, or Restart; Other: Unexpected State[email protected]

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 6 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.

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, NVD7.5 HIGHreceipt
Exploit probability0.23102 · top 2% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned bymicrosoftreceipt
Recorded changes28 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productMicrosoft Internet Explorer 11; Microsoft Internet Explorer 11 on Windows Server 2012; Microsoft Internet Explorer 11 on Windows 10 Version 1903 for 32-bit Systems…receipt
Published rangesmicrosoft internet explorer 10; microsoft internet explorer 11receipt

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

A remote code execution vulnerability exists in the way that Microsoft browsers access objects in memory, aka 'Microsoft Browser Memory Corruption Vulnerability'. receipt

NVD's analysis a second authority

severity
7.5 CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
weakness
CWE-787
affected versions
microsoft internet explorer 10; microsoft internet explorer 11

check it yourself portal.msrc.microsoft.com receipt

Dated events

2022-01-06EPSS moved 0.08 to 0.292022-04-01EPSS moved 0.37 to 0.022026-06-15EPSS moved 0.53 to 0.23

Movement the material steps

14 Apr 20210.0841
6 Jan 20220.29179 · crossed 0.10
1 Apr 20220.02034 · crossed 0.10
7 Mar 20230.24112 · crossed 0.10 · scoring model v2023.03.01
11 Jul 20230.14010
2 Jan 20250.26239
17 Mar 20250.28743 · scoring model v2025.03.14
29 Mar 20250.40189
10 May 20260.52989 · crossed 0.50
15 Jun 20260.23102 · crossed 0.50 · scoring model v2026.06.15
6 Sep 20260.23102
Show all 28 observations
14 Apr 20210.0841
6 Jan 20220.29179
4 Feb 20220.3686
1 Apr 20220.02034
24 Apr 20220.02217
10 Nov 20220.02866
20 Feb 20230.0316
7 Mar 20230.24112
11 Jul 20230.14010
2 Jul 20240.18563
20 Jul 20240.13927
24 Aug 20240.18459
27 Oct 20240.16842
17 Dec 20240.16341
2 Jan 20250.26239
29 Jan 20250.33017
28 Feb 20250.35314
17 Mar 20250.28743
25 Mar 20250.32656
29 Mar 20250.40189
30 Mar 20250.32832
14 Sep 20250.46501
10 May 20260.52989
15 Jun 20260.23102
23 Aug 20260.2237
30 Aug 20260.23102
5 Sep 20260.2237
6 Sep 20260.23102

28 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 0.23102Published2019-05-16Index as of2026-09-06

The record had been public for 7 years, 3 months when this index was last written.

Published 2019-05-16 receipt · Index as of 2026-09-06 derived

The pattern, elsewhere

This record is one instance of CWE-787, out-of-bounds write. The index holds 14893 prior instances of this class, 164 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2020-0968 · Microsoft Internet Explorer 9matches 9 of 9KEV listed · 2020receipt
CVE-2019-1367 · Microsoft Internet Explorer 9matches 9 of 9KEV listed · 2019receipt
CVE-2022-2294 · Google Chromematches 7 of 9KEV listed · 2022receipt
CVE-2025-0282 · Ivanti Connect Securematches 6 of 9KEV listed · 2025receipt
CVE-2025-22457 · Ivanti Connect Securematches 6 of 9KEV listed · 2025receipt
CVE-2024-21762 · Fortinet FortiProxymatches 6 of 9KEV listed · 2024receipt

"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

14893 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-2019-0940.

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.