CVE-2020-7870: A memory corruption vulnerability exists when ezPDF improperly handles the parameter

Q: How do I fix CVE-2020-7870?

ezpdf editor: upgrade to 3.0.6.5; ezpdf reader: upgrade to 3.0.0.2. Exact commands for each OS are on this page.

Q: Is CVE-2020-7870 being exploited?

CVE-2020-7870 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-7870 affect?

CVE-2020-7870 affects ezpdf editor, ezpdf reader. Severity is medium (CVSS 6.4). A memory corruption vulnerability exists when ezPDF improperly handles the parameter. This vulnerability exists due to insufficient validation of the parameter.

Q: How urgent is CVE-2020-7870?

Priority 36/100. No elevated risk signals yet.

Routine

MEDIUM 6.4UPGRADEUPGRADE

CVE-2020-7870 is a medium-severity flaw (CVSS 6.4) affecting ezpdf editor, ezpdf reader. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A memory corruption vulnerability exists when ezPDF improperly handles the parameter. This vulnerability exists due to insufficient validation of the parameter.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.4 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-20, CWE-787
Published	2021-06-29
Last modified	2026-06-17

Publisher (CNA): KrCERT/CC · Vendor: unidocs

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

Am I affected?

Timeline

2021-06-29 14:15 UTCPublished CVE record published
2026-06-17 03:25 UTCUpdated Record last modified

unidocs ezpdf editor UPGRADE

Affected: < 3.0.6.5

Fixed in: 3.0.6.5

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy ezpdf-editor || rpm -q ezpdf-editor || ezpdf-editor --version

2. UPGRADE to 3.0.6.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ezpdf-editor

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ezpdf-editor

Note

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

unidocs ezpdf reader UPGRADE

Affected: < 3.0.0.2

Fixed in: 3.0.0.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy ezpdf-reader || rpm -q ezpdf-reader || ezpdf-reader --version

2. UPGRADE to 3.0.0.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ezpdf-reader

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ezpdf-reader

Note

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

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-2020-7870?

ezpdf editor: upgrade to 3.0.6.5; ezpdf reader: upgrade to 3.0.0.2. Exact commands for each OS are on this page.

Is CVE-2020-7870 being exploited?

CVE-2020-7870 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-2020-7870 affect?

CVE-2020-7870 affects ezpdf editor, ezpdf reader. Severity is medium (CVSS 6.4). A memory corruption vulnerability exists when ezPDF improperly handles the parameter. This vulnerability exists due to insufficient validation of the parameter.

How urgent is CVE-2020-7870?

Priority 36/100. No elevated risk signals yet.

References

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