Vulnerability · Published Sep 29, 2021 · Assigned by adobe

CVE-2021-39861Adobe Acrobat Reader DC Catalog Plugin Out-of-Bounds Read Bug

Medium 5.5

In plain English

A medium-severity out-of-bounds read 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)5.5Medium

Exploit odds (30 days)2.5%top 15.0% 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 an out-of-bounds read vulnerability that could lead to disclosure of arbitrary memory information 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 2020.004.30006unspecified – through 2017.011.30199unspecified – through 2021.005.20060unspecified – through None

Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

References

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