SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-33794

Foxit Reader before 10.1.4 and PhantomPDF before 10.1.4 allow information disclosure or an application crash after mishandling the Tab key during XFA form interaction.

CRITICAL 9.1EPSS 1.10%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.10%). 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 allow information disclosure or an application crash after mishandling the Tab key during XFA form interaction.

CVSS 3.1
9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
EPSS
1.10% probability · 66th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Affected
foxitsoftware/foxit reader · foxitsoftware/phantompdf
Source
cve@mitre.org
EPSS trend
0%3%5%26 October 2026: 1.10%26 October 202626 October 2026

EPSS 1.1% 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.