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Fencer Vulns
high 7.5

CVE-2019-12408 json

Missing Initialization of Resource in Apache Arrow

published 2019-11-08 7 y ago modified 2026-06-17 4 mo ago also GHSA-8cw2-jv5c-c825 , PYSEC-2019-195 , EUVD-2019-0106

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.2%
EPSS 3.2% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known

Summary

It was discovered that the C++ implementation (which underlies the R, Python and Ruby implementations) of Apache Arrow 0.14.0 to 0.14.1 had a uninitialized memory bug when building arrays with null values in some cases. This can lead to uninitialized memory being unintentionally shared if Arrow Arrays are transmitted over the wire (for instance with Flight) or persisted in the streaming IPC and file formats.

Patch / fix

  • pypi pyarrow 0.15.0, 0.15.1
  • rubygems red-arrow 0.15.1

Exploit prediction

3.23% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
pypi pyarrow
>=0.14.0, <0.15.1
>=0.14.0, <0.15.0
0.15.1
0.15.0
rubygems red-arrow
>=0.14.0, <0.15.1
0.15.1

Affected products

  • Apache Software Foundation Apache Arrow

Classification

Weakness
  • CWE-909 Missing Initialization of Resource

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.