CVE-2021-31471: This vulnerability allows remote attackers to disclose sensitive information on affected installations of Foxi

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MEDIUM 5.5UPGRADEUPGRADE

CVE-2021-31471 is a medium-severity flaw (CVSS 5.5) affecting 3d, 3d. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Foxit Reader 10.1.1.37576. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of U3D objects embedded in PDF files. The issue results from the lack of proper validation of user-supplied data, which can result in a read

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	2.1% (top 18%)
CISA exploited list	No
Weakness	CWE-125
Published	2021-05-07
Last modified	2026-06-17

Publisher (CNA): Zero Day Initiative · Vendor: foxitsoftware

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-05-07 21:15 UTCPublished CVE record published
2026-06-17 03:51 UTCUpdated Record last modified

foxitsoftware 3d UPGRADE

Affected: <= 9.7.4.29600 · >= 10.0 and <= 10.0.1.37598

Fixed in: newer than 10.0.1.37598

Safe to downgrade to: a release before 10.0

1. Check installed version

apt-cache policy 3d || rpm -q 3d || 3d --version

2. UPGRADE to newer than 10.0.1.37598 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade 3d

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade 3d

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 10.0 (Debian / Ubuntu)

apt-cache madison 3d sudo apt install 3d=<VERSION_BEFORE_10.0> sudo apt-mark hold 3d

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list 3d sudo dnf downgrade 3d-<VERSION_BEFORE_10.0> sudo dnf versionlock add 3d

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

foxitsoftware 3d UPGRADE

Affected: <= 9.7.4.29600 · >= 10.0 and <= 10.0.1.37598

Fixed in: newer than 10.0.1.37598

Safe to downgrade to: a release before 10.0

1. Check installed version

apt-cache policy 3d || rpm -q 3d || 3d --version

2. UPGRADE to newer than 10.0.1.37598 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade 3d

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade 3d

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 10.0 (Debian / Ubuntu)

apt-cache madison 3d sudo apt install 3d=<VERSION_BEFORE_10.0> sudo apt-mark hold 3d

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list 3d sudo dnf downgrade 3d-<VERSION_BEFORE_10.0> sudo dnf versionlock add 3d

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-31471?

3d: upgrade to newer than 10.0.1.37598; 3d: upgrade to newer than 10.0.1.37598. Exact commands for each OS are on this page.

Is CVE-2021-31471 being exploited?

CVE-2021-31471 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-31471 affect?

CVE-2021-31471 affects 3d, 3d. Severity is medium (CVSS 5.5). This vulnerability allows remote attackers to disclose sensitive information on affected installations of Foxit Reader 10.1.1.37576. User interaction is required to exploit this vulnerability in that the target must visit a malicious page o

How urgent is CVE-2021-31471?

Priority 40/100. No elevated risk signals yet.

Related CVEs

CVE-2021-31472 HIGH 7.8 UPGRADE UPGRADE This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader
CVE-2021-31470 HIGH 7.8 UPGRADE UPGRADE This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader
CVE-2021-31469 LOW 3.3 UPGRADE UPGRADE This vulnerability allows remote attackers to disclose sensitive information on affected installations of Foxi
CVE-2021-31468 HIGH 7.8 UPGRADE UPGRADE This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader
CVE-2021-31467 LOW 3.3 UPGRADE UPGRADE This vulnerability allows remote attackers to disclose sensitive information on affected installations of Foxi

References

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