Cyber Resilience

CVE-2021-39861

Medium

Published: 29 September 2021

Published
29 September 2021
Modified
21 November 2024
KEV Added
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Patch
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CVSS Score v3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
EPSS Score 0.0165 82.4th percentile
Risk Priority 12 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-39861 is a medium-severity Out-of-bounds Read (CWE-125) vulnerability in Microsoft Windows. Its CVSS base score is 5.5 (Medium).

Operationally, ranked in the top 17.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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…

more

issue requires user interaction in that a victim must open a malicious file.

CWE(s)
CWE-125

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

adobe
acrobat dc
20.006.20034 — 21.005.20060 · 20.006.20034 — 21.005.20058 · 20.006.20034 — 21.005.20058
adobe
acrobat reader dc
20.006.20034 — 21.005.20060
adobe
acrobat 2017
17.011.30158 — 17.011.30199
adobe
acrobat reader 2017
17.011.30158 — 17.011.30199
adobe
acrobat
20.001.30005 — 20.004.30006
adobe
acrobat reader
20.001.30005 — 20.004.30006

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References