Adobe Acrobat Reader DC OTF Font Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

published 2022-01-14 4y ago modified 2026-06-17 4mo ago also EUVD-2021-31523

cvss: 7.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 8.2%; EPSS 8.2% chance of exploitation in 30 days, percentile 94%
public exploits: 0; none known

Acrobat Reader DC version 21.007.20099 (and earlier), 20.004.30017 (and earlier) and 17.011.30204 (and earlier) are affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

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Exploit prediction

8.19% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	2.0	9.3	AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected products

Adobe Acrobat Reader

Classification

Weakness

CWE-787 Out-of-bounds Write

References

helpx.adobe.com /security/products/acrobat/apsb22-01.html
vendor-advisory
zerodayinitiative.com /advisories/ZDI-22-539/
third-party-advisory, vdb-entry

Sources

CVE List CVE-2021-44707
NVD CVE-2021-44707

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