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Fencer Vulns
high 8.8

CVE-2017-14639 json

AP4_VisualSampleEntry::ReadFields in Core/Ap4SampleEntry.cpp in Bento4 1.5.0-617 uses incorrect character data types, which causes a stack-…

published 2017-09-21 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-6139

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits
0
none known

Summary

AP4_VisualSampleEntry::ReadFields in Core/Ap4SampleEntry.cpp in Bento4 1.5.0-617 uses incorrect character data types, which causes a stack-based buffer underflow and out-of-bounds write, leading to denial of service (application crash) or possibly unspecified other impact.

Patch / fix

Exploit prediction

1.70% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • blogs.gentoo.org https://blogs.gentoo.org/ago/2017/09/14/bento4-stack-based-buffer-underflow-in-ap4_visualsampleentryreadfields-ap4sampleentry-cpp/ referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/axiomatic-systems/Bento4/issues/190 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-843 Access of Resource Using Incompatible Type

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.