CVE-2021-40728

mediumpriority · attend · 46EPSS 0.546 · 99 %ileEURUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

54.6% (99th) EPSS

CVSS 6.8 · medium

Is it mine?

18 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

Adobe Acrobat Reader DC version 21.007.20095 (and earlier), 21.007.20096 (and earlier), 20.004.30015 (and earlier), and 17.011.30202 (and earlier) is affected by a use-after-free vulnerability in the processing of the GetURL function on a global object window that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–7.8

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 6.4

v3.17.8highAV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · psirt@adobe.comexploitability 1.8 · impact 5.9

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-416USCWE-416US

affected products (18)

Products and version ranges known to be affected.

Adobe Acrobat Reader≤ unspecified ≤20.004.30015enisa_euvdEU
Adobe Acrobat Reader≤ unspecified ≤17.011.30202enisa_euvdEU
Adobe Acrobat Reader≤ unspecified ≤21.007.20096enisa_euvdEU
Adobe Acrobat Reader≤ unspecified ≤21.007.20095enisa_euvdEU
Adobe Systems Inc. Adobe Acrobat 2017≤ 17.011.30204 Classic 2017fstec_bduRU
Adobe Systems Inc. Adobe Acrobat 2020≤ 20.004.30017 Classic 2020fstec_bduRU
Adobe Systems Inc. Adobe Acrobat Document Cloud≤ 21.007.20099 Continuousfstec_bduRU
Adobe Systems Inc. Adobe Acrobat Reader 2017≤ 17.011.30204 Classic 2017fstec_bduRU
Adobe Systems Inc. Adobe Acrobat Reader 2020≤ 20.004.30017 Classic 2020fstec_bduRU
Adobe Systems Inc. Adobe Acrobat Reader Document Cloud≤ 21.007.20099 Continuousfstec_bduRU
adobe acrobat17.011.30158 → 17.011.30202nvdUScpe:2.3:a:adobe:acrobat:*:*:*:*:*:*:*:*
adobe acrobat20.001.30005 → 20.004.30015nvdUScpe:2.3:a:adobe:acrobat:*:*:*:*:*:*:*:*
adobe acrobat dc15.008.20082 → 21.007.20095nvdUScpe:2.3:a:adobe:acrobat_dc:*:*:*:*:*:*:*:*
adobe acrobat dc15.008.20082 → 21.007.20096nvdUScpe:2.3:a:adobe:acrobat_dc:*:*:*:*:*:*:*:*
adobe acrobat reader17.011.30158 → 17.011.30202nvdUScpe:2.3:a:adobe:acrobat_reader:*:*:*:*:*:*:*:*
adobe acrobat reader20.001.30005 → 20.004.30015nvdUScpe:2.3:a:adobe:acrobat_reader:*:*:*:*:*:*:*:*
adobe acrobat reader dc15.008.20082 → 21.007.20095nvdUScpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:*:*:*:*
adobe acrobat reader dc15.008.20082 → 21.007.20096nvdUScpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2021-10-15modified 2026-06-17

references (7)

External citations — patches, advisories, analysis.

scry

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