Cyber Resilience

CVE-2021-21034

Medium

Published: 11 February 2021

Published
11 February 2021
Modified
21 November 2024
KEV Added
Patch
CVSS Score v3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
EPSS Score 0.0169 82.7th percentile
Risk Priority 10 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-21034 is a medium-severity Out-of-bounds Read (CWE-125) vulnerability in Adobe Acrobat. Its CVSS base score is 4.3 (Medium).

Operationally, ranked in the top 17.3% 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 an Out-of-bounds Read vulnerability. An unauthenticated attacker could leverage this vulnerability to locally elevate privileges in the context of the current user.…

more

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