#VU54714 Command injection in Adobe Acrobat and Adobe Reader - CVE-2021-28634

Vulnerability identifier: #VU54714

Vulnerability risk: Low

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-28634

CWE-ID: CWE-78

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Adobe Acrobat
Client/Desktop applications / Office applications
Adobe Reader
Client/Desktop applications / Office applications

Vendor: Adobe

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to improper input validation. A local user can execute arbitrary OS commands and escalate privileges on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Adobe Acrobat: 17.008.30051 - 17.011.30197, 20.001.30020 - 20.013.20074, 21.001.20135 - 21.005.20148

Adobe Reader: 21.001.20135, 21.001.20149, 21.001.20150, 21.001.20155, 21.005.20054, 21.005.20148, 2017.011.30156 - 2020.013.20074

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External links
http://helpx.adobe.com/security/products/acrobat/apsb21-51.html

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.