CVE-2013-3346: Adobe Reader and Acrobat Memory Corruption Vulnerability

Patch now

CRITICAL 9.8EXPLOITEDREMOTEUPGRADEUPGRADE

CVE-2013-3346 is a critical-severity flaw (CVSS 9.8) affecting acrobat, acrobat reader, reported as exploited in the wild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Adobe Reader and Acrobat 9.x before 9.5.5, 10.x before 10.1.7, and 11.x before 11.0.03 allow attackers to execute arbitrary code or cause a denial of service (memory corruption) via unspecified vectors, a different vulnerability than CVE-2013-2718, CVE-2013-2719, CVE-2013-2720, CVE-2013-2721, CVE-2013-2722, CVE-2013-2723, CVE-2013-2725, CVE-2013-2726, CVE-2013-2731, CVE-2013-2732, CVE-2013-2734, CVE-2013-2735, CVE-2013-2736, CVE-2013-3337, CVE-20

Why this priority

Critical severity
EPSS top 1%: very likely to be exploited
Exploited in the wild (CISA KEV)
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	78.9% (top 1%)
CISA exploited list	Yes, fix due 2022-03-24
Weakness	CWE-787
Published	2013-08-30
Last modified	2026-06-16

Publisher (CNA): Adobe Systems Incorporated · Vendor: adobe

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2013-08-30 20:55 UTCPublished CVE record published
2022-03-03Exploited Added to the CISA Known Exploited Vulnerabilities list
2022-03-24Deadline CISA due date for US federal agencies to patch
2026-06-16 23:54 UTCUpdated Record last modified

adobe acrobat UPGRADE

Affected: >= 9.0 and < 9.5.5 · >= 10.0 and < 10.1.7 · >= 11.0 and < 11.0.03

Fixed in: 9.5.5, 10.1.7, 11.0.03

Safe to downgrade to: a release before 9.0

1. Check installed version

apt-cache policy acrobat || rpm -q acrobat || acrobat --version

2. UPGRADE to 9.5.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade acrobat

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade acrobat

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 9.0 (Debian / Ubuntu)

apt-cache madison acrobat sudo apt install acrobat=<VERSION_BEFORE_9.0> sudo apt-mark hold acrobat

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

dnf --showduplicates list acrobat sudo dnf downgrade acrobat-<VERSION_BEFORE_9.0> sudo dnf versionlock add acrobat

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.

adobe acrobat reader UPGRADE

Affected: >= 9.0 and < 9.5.5 · >= 10.0 and < 10.1.7 · >= 11.0 and < 11.0.03

Fixed in: 9.5.5, 10.1.7, 11.0.03

Safe to downgrade to: a release before 9.0

1. Check installed version

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

2. UPGRADE to 9.5.5 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade acrobat-reader

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 9.0 (Debian / Ubuntu)

apt-cache madison acrobat-reader sudo apt install acrobat-reader=<VERSION_BEFORE_9.0> sudo apt-mark hold acrobat-reader

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

dnf --showduplicates list acrobat-reader sudo dnf downgrade acrobat-reader-<VERSION_BEFORE_9.0> sudo dnf versionlock add acrobat-reader

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.

Exact fixes by distribution

Fedora 46 · perl-Net-IDN-Encode · FIXED · 2.600-1.fc46 · FEDORA-2026-84eff0ea64 · source

sudo dnf upgrade --advisory=FEDORA-2026-84eff0ea64

Fedora ELN · libXISF · FIXED · 0.2.15-2.eln159 · FEDORA-2026-b9e2d1bda0 · source

sudo dnf upgrade --advisory=FEDORA-2026-b9e2d1bda0

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Adobe Reader ToolButton - Use-After-Free (Metasploit)
Metasploit: Adobe Reader ToolButton Use After Free
Metasploit: Adobe Reader ToolButton Use After Free

Verify at the official source NVD · CVE Program · CISA KEV catalog · 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-2013-3346?

acrobat: upgrade to 9.5.5, 10.1.7, 11.0.03; acrobat reader: upgrade to 9.5.5, 10.1.7, 11.0.03. Exact commands for each OS are on this page.

Is CVE-2013-3346 being exploited?

Yes. CVE-2013-3346 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

What does CVE-2013-3346 affect?

CVE-2013-3346 affects acrobat, acrobat reader. Severity is critical (CVSS 9.8). Adobe Reader and Acrobat 9.x before 9.5.5, 10.x before 10.1.7, and 11.x before 11.0.03 allow attackers to execute arbitrary code or cause a denial of service (memory corruption) via unspecified vectors, a different vulnerability than CVE-20

How urgent is CVE-2013-3346?

Priority 94/100. Critical severity; EPSS top 1%: very likely to be exploited; Exploited in the wild (CISA KEV); Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Adobe Acrobat vulnerabilities · Adobe Reader vulnerabilities

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References

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