What is CVE-2021-33793?

CVE-2021-33793 is a critical-severity vulnerability in Foxitsoftware Foxit_reader, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2021-08-11.

How severe is CVE-2021-33793?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Foxitsoftware Foxit_reader

CVE-2021-33793

Foxit Reader before 10.1.4 and PhantomPDF before 10.1.4 have an out-of-bounds write because the Cross-Reference table is mishandled during Office document conversion.

Vulnerability class: Buffer Overflow

EPSS: 0.011 (61.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Foxitsoftware Foxit_reader
Foxitsoftware Phantompdf
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

cve@mitre.org (Patch, x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-33793?: CVE-2021-33793 is a critical-severity vulnerability in Foxitsoftware Foxit_reader, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2021-08-11.
How severe is CVE-2021-33793?: Critical severity. CVSS v3 base score is 9.8 out of 10.