CVE-2021-28545: Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are missing support for an…

PriorityP345high8.1CVSS 3.1

AVNACLPRNUIRSUCHIHAN

EPSS

2.27%

81.1th percentile

Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are missing support for an integrity check. An unauthenticated attacker would have the ability to completely manipulate data in a certified PDF without invalidating the original certification. Exploitation of this issue requires user interaction in that a victim must open the tampered file.

Affected

7 ranges

Vendor	Product	Version range	Fixed in
adobe	acrobat	17.011.30059 – 17.011.30188	—
adobe	acrobat	20.001.30005 – 20.001.30018	—
adobe	acrobat_dc	15.008.20082 – 20.013.20074	—
adobe	acrobat_reader	17.011.30059 – 17.011.30188	—
adobe	acrobat_reader	20.001.30005 – 20.001.30018	—
adobe	acrobat_reader	unspecified – 2020.013.20074	—
adobe	acrobat_reader_dc	15.008.20082 – 20.013.20074	—

CVSS provenance

nvdv3.18.1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

nvdv2.05.8MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:N

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.