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CVE-2021-40700

INDEX BUILT · 2026-10-18

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Adobe Premiere Elements TIFF Memory Corruption Vulnerability Could Lead to Arbitrary Code Execution

CVE-2021-407004 of 4 sources documented this
25

rank 25 = 0 + 23 + 0 + 2 + 0

rank@v1 · scheduled

Someone is already using it

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

EPSS 0.01658  ·  without this subject the record ranks 25

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 9.3, from NVD  ·  without this subject the record ranks 2

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 25

How much of the world it touches

NVD CPE configurations

1 product in the CPE ranges  ·  without this subject the record ranks 23

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 25

Hindsight · the state

0.01658EPSSNOT IN KEVas of 2026-10-18
Severity7.8 HIGHreceipt
Harmtotal lossreceipt
Exploitationnone in held sources
Defenseno fix version held
Movementrisenreceipt
PLATEAU10Minimal movement since 2022-02-04, 1628 days at 0.02, as of 2026-07-21. 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
Adobe7.8 HIGHreceipt
NVD9.3 CRITICALreceipt
Scoring standard
AdobeCVSS v3.0receipt
NVDCVSS v2.0receipt

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

Running Adobe Premiere? 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

Watch Adobe Premiere

Set up a watchlist (free with an account: one stack of three products)

Record your call

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

Patch by…

Or open an investigation: an incident or a near miss on this CVE, kept with its evidence where anyone in your organisation can find it.

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.

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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 v3.0 · the CNA's vectorreceipt
Weakness classCWE-788 Access of Memory Location After End of Bufferreceipt
Published consequencesCWE-788: Confidentiality: Read Memory; Integrity, Availability: Modify Memory, DoS: Crash, Exit, or Restart; Integrity: Modify Memory, Execute Unauthorized Code or Commandscwe-consequences@4.20

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 21 Jul 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.
BOD 26-04 deadlineIf the system is reachable from the internet: 14 days. If not: fix at the next system upgrade.derived
Show full BOD 26-04 deadline

CISA has not scored it, so the directive's own defaults apply: automatable no, technical impact total. Calendar days from the KEV listing or from when you find it on a system, whichever is first. Federal agencies are bound from 7 Dec 2026, and contracts often carry it to suppliers. The directive and its table

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, NVD9.3 CRITICALreceipt
Exploit probability0.01658 · top 24% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned byadobereceipt
Recorded changes25 · last 18 Oct 2026derived

Affected & Fixed Versions as published

Affected productAdobe Premierereceipt
Published rangesadobe premiere elements <= 2021.1receipt

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.

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$82,700over the next 30 days, if this record is yours
Movement-$771,000on 2022-02-04, the last material move, 4 years, 5 months before this reading
Basisassumeda published average, not your estate

$82,700 = $4.99M incident cost x 1 exposure x 0.01658 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.

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Attack path

Local accessrequires user interactionAdobe PremiereCWE-788 weaknessFull compromise (C/I/A)C:H / I:H / A:Hexploits CWE-788data compromise

What it is stated by the CNA

Adobe Premiere Elements version 2021.2235820 (and earlier) is affected by a memory corruption vulnerability due to insecure handling of a malicious TIFF file, potentially resulting in arbitrary code execution in the context of the current user. User interaction is required to exploit this vulnerability. receipt

NVD's analysis a second authority

severity
9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C
weakness
CWE-788; CWE-119
affected versions
adobe premiere elements <= 2021.1
also scored by
psirt@adobe.com 7.8 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

The CNA scored it 7.8 and NVD 9.3. Both are shown because both were published; we do not pick one.

check it yourself helpx.adobe.com receipt

Dated events

2021-10-05EPSS moved 0.01 to 0.232022-04-01EPSS moved 0.08 to 0.01

Movement the material steps

28 Sep 20210.00597
5 Oct 20210.2339 · crossed 0.10
11 Oct 20210.06371 · crossed 0.10
6 Jan 20220.2339 · crossed 0.10
4 Feb 20220.07947 · crossed 0.10
7 Mar 20236e-4 · scoring model v2023.03.01
17 Mar 20250.01207 · scoring model v2025.03.14
15 Jun 20260.01605 · scoring model v2026.06.15
21 Jul 20260.01658
Show all 25 observations
28 Sep 20210.00597
5 Oct 20210.2339
11 Oct 20210.06371
6 Jan 20220.2339
4 Feb 20220.07947
1 Apr 20220.01223
7 Mar 20236e-4
8 Mar 20230.00060
10 Mar 20230.00068
20 Apr 20230.00078
2 Jun 20230.00095
27 Aug 20230.00083
8 Nov 20230.00155
17 Sep 20240.00166
17 Dec 20240.00313
30 Jan 20250.00327
17 Mar 20250.01207
19 Mar 20250.01725
29 Mar 20250.04229
30 Mar 20250.01725
28 Apr 20250.04112
18 Nov 20250.04289
21 Nov 20250.04112
15 Jun 20260.01605
21 Jul 20260.01658

25 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 0.01658Published2021-09-27Index as of2026-07-21

The record had been public for 4 years, 9 months when this index was last written.

Published 2021-09-27 receipt · Index as of 2026-07-21 derived

Siblings and hubs

Records related to this one

Its defect family

adobe premiere

Of the 5 records in this advisory that state one, this holds the lowest EPSS percentile: 0.74996.

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

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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What usually comes next

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