Cyber Resilience

CVE-2021-21057

Medium

Published: 11 February 2021

Published
11 February 2021
Modified
21 November 2024
KEV Added
Patch
CVSS Score v3.1 6.6 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
EPSS Score 0.0069 72.4th percentile
Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-21057 is a medium-severity NULL Pointer Dereference (CWE-476) vulnerability in Adobe Acrobat. Its CVSS base score is 6.6 (Medium).

Operationally, ranked in the top 27.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by a null pointer dereference vulnerability when parsing a specially crafted PDF file. An unauthenticated attacker could leverage this vulnerability to achieve denial…

more

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

CWE(s)

Related Threats

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

Affected Assets

adobe
acrobat
17.0 — 17.011.30188 · 20.0 — 20.001.30018
adobe
acrobat dc
≤ 20.013.20074
adobe
acrobat reader
17.0 — 17.011.30188 · 20.0 — 20.001.300183
adobe
acrobat reader dc
≤ 20.013.20074

Mitigating Controls

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

References