Vulnerability · Published Sep 29, 2021 · Assigned by adobe

CVE-2021-39854Adobe Acrobat Reader DC Null Pointer Dereference Could Lead To Application Denial-of-Service

Medium 5.5

In plain English

A medium-severity null pointer dereference 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 2.4% (higher than 84% of all known vulnerabilities).

Severity (CVSS 3.0)5.5Medium

Exploit odds (30 days)2.4%top 15.9% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a Null pointer dereference vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service 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 DC 2021 Julyunspecified – through 20.0-Classic 2021 Julyunspecified – through 17.0-Classic 2021 Julyunspecified – through None

Weakness: CWE-476 · Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

https://helpx.adobe.com/security/products/acrobat/apsb21-55.html x_refsource_MISC