CVE-2016-4819: The printfDx function in Takumi Yamada DX Library for Borland C++ 3.13f through 3.16b, DX Library for Gnu C++

Q: How do I fix CVE-2016-4819?

dx library: upgrade to newer than 3.16b; dx library: upgrade to newer than 3.16b; dx library: upgrade to newer than 3.16b. Exact commands for each OS are on this page.

Q: Is CVE-2016-4819 being exploited?

CVE-2016-4819 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-2016-4819 affect?

CVE-2016-4819 affects dx library, dx library, dx library. Severity is critical (CVSS 9.8). The printfDx function in Takumi Yamada DX Library for Borland C++ 3.13f through 3.16b, DX Library for Gnu C++ 3.13f through 3.16b, and DX Library for Visual C++ 3.13f through 3.16b allows remote attackers to execute arbitrary code via a cra

Q: How urgent is CVE-2016-4819?

Priority 62/100. Critical severity; EPSS top 10%: very likely to be exploited; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADEUPGRADEUPGRADE

CVE-2016-4819 is a critical-severity flaw (CVSS 9.8) affecting dx library, dx library, dx library. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The printfDx function in Takumi Yamada DX Library for Borland C++ 3.13f through 3.16b, DX Library for Gnu C++ 3.13f through 3.16b, and DX Library for Visual C++ 3.13f through 3.16b allows remote attackers to execute arbitrary code via a crafted string.

Why this priority

Critical severity
EPSS top 10%: very likely to be exploited
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	3.8% (top 10%)
CISA exploited list	No
Published	2016-06-19
Last modified	2026-06-17

Publisher (CNA): JPCERT/CC · Vendor: dx library project

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

Am I affected?

Timeline

2016-06-19 01:59 UTCPublished CVE record published
2026-06-17 00:48 UTCUpdated Record last modified

dx library project dx library UPGRADE

Affected: <= 3.16b

Fixed in: newer than 3.16b

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy dx-library || rpm -q dx-library || dx-library --version

2. UPGRADE to newer than 3.16b (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade dx-library

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade dx-library

Note

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

dx library project dx library UPGRADE

Affected: <= 3.16b

Fixed in: newer than 3.16b

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy dx-library || rpm -q dx-library || dx-library --version

2. UPGRADE to newer than 3.16b (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade dx-library

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade dx-library

Note

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

dx library project dx library UPGRADE

Affected: <= 3.16b

Fixed in: newer than 3.16b

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy dx-library || rpm -q dx-library || dx-library --version

2. UPGRADE to newer than 3.16b (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade dx-library

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade dx-library

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-2016-4819?

dx library: upgrade to newer than 3.16b; dx library: upgrade to newer than 3.16b; dx library: upgrade to newer than 3.16b. Exact commands for each OS are on this page.

Is CVE-2016-4819 being exploited?

CVE-2016-4819 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-2016-4819 affect?

CVE-2016-4819 affects dx library, dx library, dx library. Severity is critical (CVSS 9.8). The printfDx function in Takumi Yamada DX Library for Borland C++ 3.13f through 3.16b, DX Library for Gnu C++ 3.13f through 3.16b, and DX Library for Visual C++ 3.13f through 3.16b allows remote attackers to execute arbitrary code via a cra

How urgent is CVE-2016-4819?

Priority 62/100. Critical severity; EPSS top 10%: very likely to be exploited; Remotely exploitable, no login, no user action

Related CVEs

CVE-2016-1131 HIGH 7.8 UPGRADE Buffer overflow in the CL_vsprintf function in Takumi Yamada DX Library before 3.16 allows remote attackers to

References

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