CVE-2014-1859 is a medium-severity (CVSS 5.5) CWE-59 vulnerability in python-numpy. A fix is available for python-numpy — see the affected versions and patch details below.
Numpy arbitrary file write via symlink attack
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
python-numpyReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Debian:10 packages — download data is not available via public APIs for these ecosystems.
Description
(1) core/tests/test_memmap.py, (2) core/tests/test_multiarray.py, (3) f2py/f2py2e.py, and (4) lib/tests/test_io.py in NumPy before 1.8.1 allow local users to write to arbitrary files via a symlink attack on a temporary file.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦Debian:10 | python-numpy | all versions | 1:1.8.1~rc1-1 |
Affected Products
fedorafedoraprojectnumpynumpyenterprise linuxredhatDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for python-numpy, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update python-numpy to 1:1.8.1~rc1-1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2014-1859 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
Frequently Asked Questions
Is CVE-2014-1859 in your dependencies?
Find it across Debian:10, including transitive dependencies.