CVE-2014-1859
MEDIUMCVE-2014-1859 is a medium-severity (CVSS 5.5) CWE-59 vulnerability in python-numpy. O3 Security confirms whether CVE-2014-1859 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Numpy arbitrary file write via symlink attack
Blast Radius
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 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for python-numpy. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
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.
How O3 protects you
O3 pinpoints whether CVE-2014-1859 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to CVE-2014-1859. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2014-1859 in your dependencies?
O3 detects CVE-2014-1859 across Debian:10 dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.