SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-33792

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.

HIGH 7.8EPSS 2.11%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (2.11%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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.

CVSS 3.1
7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
2.11% probability · 82th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-787
Affected
foxitsoftware/foxit reader · foxitsoftware/phantompdf
Source
cve@mitre.org
EPSS trend
0%3%5%26 October 2026: 2.11%26 October 202626 October 2026

EPSS 2.1% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.