NULL pointer dereference in Adobe Acrobat
CVE-2021-21057
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 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.
EPSS: 0.011 (62.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.6 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H.
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- psirt@adobe.com (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-21057?
- CVE-2021-21057 is a medium-severity vulnerability in Adobe Acrobat, classified under NULL Pointer Dereference. CVSS score: 6.6/10. Published 2021-02-11.
- How severe is CVE-2021-21057?
- Medium severity. CVSS v3 base score is 6.6 out of 10.
- Is CVE-2021-21057 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.