Is CVE-2021-33792 in the CISA KEV catalog?

No. CVE-2021-33792 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-33792?

CVE-2021-33792 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2021-33792?

CVE-2021-33792 has an EPSS score of 2.11% (80th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-33792?

Upgrade foxit reader to 10.1.4 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-33792

HIGHEPSS 80th pctl

7.8

CVSS v3

NVD

Description

Foxit Reader before 10.1.4 and PhantomPDF before 10.1.4 have an out-of-bounds write via a crafted /Size key in the Trailer dictionary.

CWE-787Out-of-bounds Write

How to fix

Remediation Available

foxit readerNVD

Affected:< 10.1.4Fixed in:10.1.4CVE-2021-33792derived from NVD

phantompdfNVD

Affected:< 10.1.4Fixed in:10.1.4CVE-2021-33792derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploit Intelligence

2.11%probability of exploitation in 30 days

80thpercentile

Elevated risk: more likely to be exploited than 80% of all known CVEs.

References

Vendor Advisory1

foxitsoftware.com

Related Vulnerabilities

Other CWE-787 (Out-of-bounds Write) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2023-4863	High	8.8	100%	KEV	Fix
CVE-2020-16040	Medium	6.5	100%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.