vciy

CVE-2021-24068

INDEX BUILT · 2026-09-20

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Microsoft Excel Remote Code Execution Vulnerability

CVE-2021-240684 of 4 sources documented this
23

rank 23 = 1 + 17 + 0 + 5 + 0

rank@v1 · backlog

Someone is already using it

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

EPSS 0.02480  ·  without this subject the record ranks 22

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 6.8, from NVD  ·  without this subject the record ranks 6

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 23

How much of the world it touches

NVD CPE configurations

3 products in the CPE ranges  ·  without this subject the record ranks 18

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 23

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$124,000over the next 30 days, if this record is yours
Movement-$597,000on 2024-06-13, the last material move, 2 years, 3 months before this reading
Basisassumeda published average, not your estate

$124,000 = $4.99M incident cost x 1 exposure x 0.0248 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

0.0248EPSSNOT IN KEVas of 2026-09-20
Severity7.8 HIGHreceipt
Harmtotal lossreceipt
Exploitationnone in held sources
Defenseno fix version held
Movementfallenreceipt
PLATEAU10Minimal movement since 2024-06-13, 825 days at 0.02, as of 2026-09-16. 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

Sources disagree here.

Severity score
Microsoft7.8 HIGHreceipt
NVD6.8 MEDIUMreceipt
Scoring standard
MicrosoftCVSS v3.1receipt
NVDCVSS v2.0receipt

Both shown, dated. We don't pick winners. disagreement-rules@v1

Running Microsoft Office Web Apps Server 2013…? 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

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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.

Reachneeds local access · no privileges required · user interaction required · low attack complexityreceipt
ImpactComplete confidentiality, integrity and availability lossreceipt
Scored fromCVSS v3.1 · the CNA'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 16 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, the CNA7.8 HIGHreceipt
CVSS, NVD6.8 MEDIUMreceipt
Exploit probability0.0248 · top 16% of all CVEsreceipt
Blast breadth2 products across 1 vendorderived
Assigned bymicrosoftreceipt
Recorded changes60 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productMicrosoft Office Web Apps Server 2013 Service Pack 1; Microsoft Excel 2010 Service Pack 2; Microsoft Excel 2013 Service Pack 1receipt
Published rangesmicrosoft excel 2010; microsoft excel 2013; microsoft office web apps 2013receipt

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

Microsoft Excel Remote Code Execution Vulnerability receipt

NVD's analysis a second authority

severity
6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P
affected versions
microsoft excel 2010; microsoft excel 2013; microsoft office web apps 2013
also scored by
[email protected] 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H · [email protected] 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

The CNA scored it 7.8 and NVD 6.8. Both are shown because both were published; we do not pick one.

check it yourself portal.msrc.microsoft.com receipt

Dated events

2022-01-06EPSS moved 0.10 to 0.322023-08-10EPSS moved 0.02 to 0.382024-06-13EPSS moved 0.13 to 0.01

Movement the material steps

14 Apr 20210.09575
6 Jan 20220.32208 · crossed 0.10
4 Feb 20220.12761
1 Apr 20220.01528 · crossed 0.10
7 Mar 20230.00239 · scoring model v2023.03.01
14 Jul 20230.27533 · crossed 0.10
28 Jul 20230.02309 · crossed 0.10
10 Aug 20230.38247 · crossed 0.10
24 Aug 20230.02876 · crossed 0.10
25 Nov 20230.15220 · crossed 0.10
7 Dec 20230.04080 · crossed 0.10
1 Feb 20240.10568 · crossed 0.10
14 Feb 20240.04452 · crossed 0.10
29 Feb 20240.10351 · crossed 0.10
14 Mar 20240.06521 · crossed 0.10
30 Mar 20240.27661 · crossed 0.10
13 Apr 20240.10070
14 May 20240.07927 · crossed 0.10
29 May 20240.13299 · crossed 0.10
13 Jun 20240.01331 · crossed 0.10
17 Mar 20250.00488 · scoring model v2025.03.14
15 Jun 20260.02321 · scoring model v2026.06.15
16 Sep 20260.0248
Show all 60 observations
14 Apr 20210.09575
6 Jan 20220.32208
4 Feb 20220.12761
1 Apr 20220.01528
16 May 20220.01648
13 Sep 20220.01789
7 Mar 20230.00239
24 Mar 20230.00259
7 Apr 20230.00302
21 Apr 20230.00329
5 May 20230.00306
20 May 20230.00378
1 Jun 20230.01186
17 Jun 20230.00850
29 Jun 20230.02740
14 Jul 20230.27533
28 Jul 20230.02309
10 Aug 20230.38247
24 Aug 20230.02876
6 Sep 20230.03022
20 Sep 20230.09553
2 Oct 20230.03069
16 Oct 20230.05463
29 Oct 20230.03523
11 Nov 20230.06784
25 Nov 20230.15220
7 Dec 20230.04080
22 Dec 20230.06613
4 Jan 20240.05507
18 Jan 20240.04062
1 Feb 20240.10568
14 Feb 20240.04452
29 Feb 20240.10351
14 Mar 20240.06521
30 Mar 20240.27661
13 Apr 20240.10070
28 Apr 20240.15411
14 May 20240.07927
29 May 20240.13299
13 Jun 20240.01331
30 Jun 20240.01174
15 Jul 20240.01182
31 Jul 20240.01117
17 Aug 20240.01351
4 Sep 20240.01263
22 Sep 20240.01123
9 Oct 20240.01117
15 Dec 20240.01107
17 Dec 20240.01650
17 Mar 20250.00488
19 Mar 20250.00502
25 Mar 20250.0081
29 Mar 20250.01834
30 Mar 20250.0081
11 Jun 20250.00693
19 Jul 20250.01129
25 Nov 20250.03079
16 Jan 20260.03807
15 Jun 20260.02321
16 Sep 20260.0248

60 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 0.0248Published2021-02-25Index as of2026-09-16

The record had been public for 5 years, 6 months when this index was last written.

Published 2021-02-25 receipt · Index as of 2026-09-16 derived

Siblings and hubs

Records related to this one

Its defect family

microsoft office

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

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What usually comes next

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