Vulnerability · Published Aug 20, 2021 · Assigned by adobe

CVE-2021-28634Adobe Acrobat Reader AcrobatUtils.scpt Extension OS Command Injection Vulnerability

High 8.2

In plain English

A high-severity OS command injection 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 2.2% (higher than 83% of all known vulnerabilities).

Severity (CVSS 3.1)8.2High

Exploit odds (30 days)2.2%top 17.3% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

Acrobat Reader DC versions 2021.005.20054 (and earlier), 2020.004.30005 (and earlier) and 2017.011.30197 (and earlier) are affected by an Improper Neutralization of Special Elements used in an OS Command. An authenticated attacker could leverage this vulnerability to achieve arbitrary code execution on the host machine 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 (as reported)

Vendor	Product	Versions
Adobe	Acrobat Reader	unspecified – through 2020.004.30005unspecified – through 2017.011.30197unspecified – through 2021.005.20054unspecified – through None

Weakness: CWE-78 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

References

https://helpx.adobe.com/security/products/acrobat/apsb21-51.html x_refsource_MISC