Vulnerability · Published Apr 1, 2021 · Assigned by adobe

CVE-2021-28545Acrobat Reader DC Missing Support for Integrity Check

High 8.1

In plain English

A high-severity security flaw in Acrobat Reader from Adobe. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.5% (higher than 85% of all known vulnerabilities).

Severity (CVSS 3.1)8.1High

Exploit odds (30 days)2.5%top 15.1% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

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 products (as reported)

Vendor	Product	Versions
Adobe	Acrobat Reader	unspecified – through 2020.013.20074unspecified – through 2020.001.30018unspecified – through 2017.011.30188unspecified – through None

Weakness: CWE-353 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

References

https://helpx.adobe.com/security/products/acrobat/apsb21-09.html x_refsource_MISC