---
title: "CVE-2023-50245: memory overflow vulnerability in OpenEXR-viewer"
url: https://erroneo.us/security/cve/CVE-2023-50245/
description: "CVE-2023-50245 (afichet/openexr-viewer (GitHub Actions)): OpenEXR-viewer is a viewer for OpenEXR files with detailed metadata probing. Versions prior to…"
type: vulnerability-record
section: "Security Digest"
date_published: 2023-12-11
date_modified: 2024-08-02
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2023-50245"
kev: false
cvss: 9.8
epss: 0.0105
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2023-50245: memory overflow vulnerability in OpenEXR-viewer

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 1.1% , percentile 64: FIRST’s model estimates a 1.1% chance of exploitation activity in the next 30 days, higher than 64% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes afichet/openexr-viewer (GitHub Actions) < 0.6.1, fixed in 0.6.1 . Check your lockfile, including transitive dependencies.

## What it is

OpenEXR-viewer is a viewer for OpenEXR files with detailed metadata probing. Versions prior to 0.6.1 have a memory overflow vulnerability. This issue is fixed in version 0.6.1.

## Affected packages

- GitHub Actions `afichet/openexr-viewer` < 0.6.1 → fixed: 0.6.1

## Affected products (CVE record)

- afichet openexr-viewer: < 0.6.1

## Severity

- GitHub_M CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
- GitHub CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- FIRST EPSS (model of 2026-10-21): 1.05% probability of exploitation activity in the next 30 days; percentile 64.

## Sources

- [GitHub Advisory GHSA-99jg-r3f4-rpxj](https://github.com/advisories/GHSA-99jg-r3f4-rpxj)
- [CVE.org record CVE-2023-50245](https://www.cve.org/CVERecord?id=CVE-2023-50245)
- [NVD entry CVE-2023-50245](https://nvd.nist.gov/vuln/detail/CVE-2023-50245)
- [github.com](https://github.com/afichet/openexr-viewer/security/advisories/GHSA-99jg-r3f4-rpxj)
- [github.com](https://github.com/afichet/openexr-viewer/commit/d0a7e85dfeb519951fb8a8d70f73f30d41cdd3d9)

---
Source page: https://erroneo.us/security/cve/CVE-2023-50245/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt