CVE-2017-14643: The AP4_HdlrAtom class in Core/Ap4HdlrAtom.cpp in Bento4 version 1.5.0-617 uses an incorrect character data ty

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MEDIUM 6.5DOWNGRADE

CVE-2017-14643 is a medium-severity flaw (CVSS 6.5) affecting bento4. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The AP4_HdlrAtom class in Core/Ap4HdlrAtom.cpp in Bento4 version 1.5.0-617 uses an incorrect character data type, leading to a heap-based buffer over-read and application crash in AP4_BytesToUInt32BE in Core/Ap4Utils.h.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.6% (top 24%)
CISA exploited list	No
Weakness	CWE-125
Published	2017-09-21
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: bento4

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

Am I affected?

Timeline

2017-09-21 17:29 UTCPublished CVE record published
2026-06-17 01:06 UTCUpdated Record last modified

bento4 bento4 DOWNGRADE

Affected: 1.5.0-617

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.5.0-617

1. Check installed version

apt-cache policy bento4 || rpm -q bento4 || bento4 --version

2. No fixed release: DOWNGRADE to a release before 1.5.0-617 (Debian / Ubuntu)

apt-cache madison bento4 sudo apt install bento4=<VERSION_BEFORE_1.5.0-617> sudo apt-mark hold bento4

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list bento4 sudo dnf downgrade bento4-<VERSION_BEFORE_1.5.0-617> sudo dnf versionlock add bento4

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-2017-14643?

bento4: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2017-14643 being exploited?

CVE-2017-14643 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-2017-14643 affect?

CVE-2017-14643 affects bento4. Severity is medium (CVSS 6.5). The AP4_HdlrAtom class in Core/Ap4HdlrAtom.cpp in Bento4 version 1.5.0-617 uses an incorrect character data type, leading to a heap-based buffer over-read and application crash in AP4_BytesToUInt32BE in Core/Ap4Utils.h.

How urgent is CVE-2017-14643?

Priority 47/100. Public exploit reference

Related CVEs

CVE-2024-57598 MEDIUM 6.5 DOWNGRADE A floating point exception (divide-by-zero) vulnerability was discovered in Bento4 1.6.0-641 in function AP4_T
CVE-2025-8537 LOW 3.7 UPGRADE A vulnerability, which was classified as problematic, was found in Axiomatic Bento4 up to 1.6.0-641
CVE-2025-0870 MEDIUM 5.6 UPGRADE A vulnerability was found in Axiomatic Bento4 up to 1.6.0-641
CVE-2025-0753 MEDIUM 6.3 UPGRADE A vulnerability classified as critical was found in Axiomatic Bento4 up to 1.6.0
CVE-2025-0751 MEDIUM 6.3 UPGRADE A vulnerability classified as critical has been found in Axiomatic Bento4 up to 1.6.0

References

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