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High severity7.8NVD Advisory· Published Sep 29, 2021· Updated Jun 17, 2026

CVE-2021-39843

CVE-2021-39843

Description

Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by an out-of-bounds write vulnerability 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.

Affected products

6
  • Adobe Inc./Acrobatcpe-rescue4 versions
    unspecified+ 3 more
    • (no CPE)range: unspecified
    • cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:*range: >=20.001.30005,<=20.004.30006
    • cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:*range: >=20.001.30005,<=20.004.30006
    • cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:*range: >=15.008.20082,<=21.005.20058
  • Adobe Inc./Acrobat Reader Dcllm-fuzzy2 versions
    <=2021.005.20060, <=2020.004.30006, <=2017.011.30199+ 1 more
    • (no CPE)range: <=2021.005.20060, <=2020.004.30006, <=2017.011.30199
    • cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:*range: >=15.008.20082,<=21.005.20058

Patches

Vulnerability mechanics

References

1

News mentions

0

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