Cyber Resilience

CVE-2021-39854

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 5.5 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS Score 0.0101 77.6th percentile
Risk Priority 12 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-39854 is a medium-severity NULL Pointer Dereference (CWE-476) vulnerability in Microsoft Windows. Its CVSS base score is 5.5 (Medium).

Operationally, ranked in the top 22.4% 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 a Null pointer dereference vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current…

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

CWE(s)
CWE-476

Related Threats

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

Affected Assets

adobe
acrobat dc
15.008.20082 — 21.005.20060 · 15.008.20082 — 21.005.20058 · 15.008.20082 — 21.005.20058
adobe
acrobat reader dc
15.008.20082 — 21.005.20060
adobe
acrobat
17.011.30059 — 17.011.30199 · 20.001.30005 — 20.004.30006
adobe
acrobat reader
17.011.30059 — 17.011.30199 · 20.001.30005 — 20.004.30006

Mitigating Controls

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

References