CVE-2020-8855

Code execution via fxhtml2pdf use-after-free

Published Feb 13, 2020 · Updated Aug 4, 2024

Use-after-free in fxhtml2pdf.exe in Foxit PDF Editor 9.7.0.2947 allows remote attackers to execute code via malicious HTML or PDF content. During HTML-to-PDF conversion, the module operates on an object without validating that it still exists, causing a memory access violation. A target must visit a malicious page or open a malicious file, and successful exploitation runs code in the current process context.

CVSS severity7.8
High
EPSS probability6.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Use-after-free in fxhtml2pdf.exe in Foxit PDF Editor 9.7.0.2947 allows remote attackers to execute code via malicious HTML or PDF content. During HTML-to-PDF conversion, the module operates on an object without validating that it still exists, causing a memory access violation. A target must visit a malicious page or open a malicious file, and successful exploitation runs code in the current process context.

The record

CVE
CVE-2020-8855
Published
Feb 13, 2020
Updated
Aug 4, 2024
Vendor
Foxit Software
Product
Foxit PDF Editor
Classifications
CWE-416, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 13, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=9.7.0.2947

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Foxit Software · Foxit PDF Editorversion=9.7.0.2947

Published CVSS scores

6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
7.8Zero Day InitiativeCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo