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.NET
.NET NuGet
Not in CISA KEV
HIGH severity

CVE-2018-14550 — libpng

HIGH

CVE-2018-14550 is a high-severity (CVSS 8.8) Out-of-bounds Write vulnerability in libpng. 2 public exploit references exist, so weaponization risk is real. A fix is available for libpng — see the affected versions and patch details below.

Out-of-bounds write in libpng

Also known asGHSA-qwwr-qc2p-6283
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
2 known
Exploitation data as of Oct 9, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
3.5%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs89th percentile — riskier than 89% of all scored CVEsHighest risk
1.20%2.17%3.13%4.10%1.8%3.5%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2018-14550 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,386 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected
.NETlibpng

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

Description

An issue has been found in third-party PNM decoding associated with libpng 1.6.35. It is a stack-based buffer overflow in the function get_token in pnm2png.c in pnm2png.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
.NETNuGetlibpngall versions1.6.37dotnet add package libpng --version 1.6.37

Affected Products

5 products · 5 configurations
Application
libpnglibpng
1 version
1.6.35
Application
active iq unified managernetapp
all
Application
oncommand api servicesnetapp
all
Application
hyperion infrastructure technologyoracle
1 version
11.1.2.6.0
Application
mysql workbenchoracle
≤ 8.0.23
range
Exploits & PoCs
2

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

An issue has been found in third-party PNM decoding associated with libp…

github.comNVDJun 2021

An issue has been found in third-party PNM decoding associated with libp…

github.comNVDJun 2021

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update libpng to 1.6.37 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2018-14550 is resolved across your whole dependency graph.

  3. Workarounds

    Stop feeding it untrusted input: reject or quarantine files and payloads from unverified sources until you can upgrade, restrict accepted formats to the ones you actually need, and run the parsing or decoding step in a least-privileged sandbox or short-lived worker so a crash or corrupted read cannot reach the rest of the process.

Frequently Asked Questions

An issue has been found in third-party PNM decoding associated with libpng 1.6.35. It is a stack-based buffer overflow in the function get_token in pnm2png.c in pnm2png.
O3 Security · Impact-Aware SCA

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CVE-2018-14550: libpng — Fixed in 1.6.37