Vulnerability · Published Feb 11, 2021 · Assigned by adobe

CVE-2021-21042Acrobat Reader DC Out-Of-Bounds Read Information Disclosure Vulnerability

Medium 6.5

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 14.7% (higher than 97% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.

Severity (CVSS 3.0)6.5Medium

Exploit odds (30 days)14.7%top 3.3% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack tooling1Public PoC

Official description

Acrobat Reader DC versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by an Out-of-bounds Read vulnerability that could lead to arbitrary disclosure of information in the memory stack. An attacker could leverage this vulnerability to bypass mitigations such as ASLR. 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 2020.013.20074unspecified – through 2020.001.30018unspecified – through 2017.011.30188unspecified – through None

Weakness: CWE-125 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

References

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