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HIGH severity

CVE-2019-9423 — opencv-python

HIGH

CVE-2019-9423 is a high-severity (CVSS 7.8) Out-of-bounds Write vulnerability in opencv-python. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

Out-of-bounds Write in OpenCV

Also known asPYSEC-2026-2796PYSEC-2026-2811PYSEC-2026-2835PYSEC-2026-719
Published
Updated
Affected
4 pkgs
Patched
See advisory
Exploits
None indexed
Exploitation data as of Nov 4, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs22th percentile — riskier than 22% of all scored CVEsHighest risk
0.00%0.27%0.53%0.80%0.0%0.3%May 26Sep 26Nov 26

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

4 pkgs affected
🐍opencv-python🐍opencv-python-headless🐍opencv-contrib-python🐍opencv-contrib-python-headless

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.

Description

In opencv calls that use libpng, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges required. User interaction is not required for exploitation. Product: AndroidVersions: Android-10Android ID: A-110986616

Affected Packages

4 total
EcosystemPackageVulnerable rangeFix
🐍PyPIopencv-pythonall versionsNo fix
🐍PyPIopencv-python-headlessall versionsNo fix
🐍PyPIopencv-contrib-pythonall versionsNo fix
🐍PyPIopencv-contrib-python-headlessall versionsNo fix

Affected Products

1 product · 1 configurations
OS
androidgoogle
1 version
10.0

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for opencv-python, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Remediation status

    The records we use list no patched version of opencv-python for CVE-2019-9423. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  3. Mitigate without a patch

    Constrain what reaches the vulnerable code: limit the size and shape of untrusted input, isolate the affected component in a sandboxed or least-privileged process, and enable the platform's memory-safety mitigations (ASLR, stack protector, hardened allocator) so an out-of-bounds access is more likely to fail closed than to be exploitable.

Frequently Asked Questions

In opencv calls that use libpng, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges required. User interaction is not required for exploitation. Product: AndroidVersions: Android-10Android ID: A-110986616
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CVE-2019-9423: opencv-python (High 7.8)