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CVE-2020-9663: Adobe Reader Mobile versions 20.0.1 and earlier have a directory traversal vulnerability

46
This month
MEDIUM 5.3REMOTEUPGRADE

CVE-2020-9663 is a medium-severity flaw (CVSS 5.3) affecting adobe reader. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Adobe Reader Mobile versions 20.0.1 and earlier have a directory traversal vulnerability. Successful exploitation could lead to information disclosure.

Why this priority

  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score5.3 (Medium)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance3.2% (top 12%)
CISA exploited listNo
WeaknessCWE-22
Published2020-07-22
Last modified2026-06-17
Publisher (CNA): Adobe Systems Incorporated · Vendor: adobe

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

Am I affected?

Timeline

adobe adobe reader UPGRADE
Affected: <= 20.0.1
Fixed in: newer than 20.0.1
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy adobe-reader || rpm -q adobe-reader || adobe-reader --version
2. UPGRADE to newer than 20.0.1 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade adobe-reader
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade adobe-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-2020-9663?

adobe reader: upgrade to newer than 20.0.1. Exact commands for each OS are on this page.

Is CVE-2020-9663 being exploited?

CVE-2020-9663 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-2020-9663 affect?

CVE-2020-9663 affects adobe reader. Severity is medium (CVSS 5.3). Adobe Reader Mobile versions 20.0.1 and earlier have a directory traversal vulnerability. Successful exploitation could lead to information disclosure.

How urgent is CVE-2020-9663?

Priority 46/100. Remotely exploitable, no login, no user action

Software pages

Adobe Reader vulnerabilities

Related CVEs

References

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