Patchfirst
CVE-2021-39843 High · 7.8 EPSS 76.7%

Adobe Acrobat Reader XObject Out-of-Bound Write Vulnerability

Adobe · Acrobat Reader

Summary

An out-of-bounds write flaw in the XObject handling of Adobe Acrobat Reader DC lets an attacker run arbitrary code with the privileges of the current user. Exploitation requires no authentication or local access, but a victim must be tricked into opening a malicious file.

Official description · CVE.org

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 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.

Breakdown
25.4 / 100
Exploited
Not confirmed
Reports
0
Tactics
0/15

Disclosed on 29 Sep 2021. No public exploit code or confirmed exploitation is recorded.

techniques

No techniques linked

No ATT&CK techniques are linked to this CVE yet. MITRE CTID has not mapped it, and no report passage in the corpus ties it to a technique.

What security researchers reported

Not named in any threat report yet

References

1 link, grouped by NVD tag
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