# CVE-2025-48073: PYSEC-2026-1748 - OpenEXR ScanLineProcess::run_fill NULL Pointer Write In "reduceMemory" Mode

Source: https://junglewise.ai/threats/cve-2025-48073-openexr-scanlineprocess-run-fill-null-pointer-write-in  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-07  
License: CC BY 4.0 with a link back

CVE-2025-48073 · Severity: medium · CVSS 4 · Published 2026-07-07

OpenEXR ScanLineProcess::run_fill NULL Pointer Write In "reduceMemory" Mode

Technologies: [OpenEXR (PyPI)](https://junglewise.ai/threats/technologies/openexr). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2025-48073 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-48073 being exploited in the wild.

**How severe is CVE-2025-48073?** Medium severity, with a CVSS score of 4, published 7 July 2026.

**Which products and versions are affected?** OpenEXR (PyPI) ECOSYSTEM:introduced=3.3.2,fixed=3.3.3.

**Is there a fix for CVE-2025-48073?** Yes. OpenEXR (PyPI): upgrade to 3.3.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2025-48073?** Check whether you run OpenEXR (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- OpenEXR (PyPI): upgrade to 3.3.3 or later

  ```sh
  pip install "OpenEXR>=3.3.3"
  ```


## Affected products

- OpenEXR (PyPI) ECOSYSTEM:introduced=3.3.2,fixed=3.3.3

## Identifiers

- CVE-2025-48073
- GHSA-qhpm-86v7-phmm
- PYSEC-2026-1748

## Related threats

- [PYSEC-2026-2849 - OpenEXR has heap-buffer-overflow via signed integer underflow in ImfContextInit.cpp](https://junglewise.ai/threats/cve-2026-26981-openexr-has-heap-buffer-overflow-via-signed-integer-underflow-in)
- [PYSEC-2026-2844 - OpenEXR has use after free in PyObject_StealAttrString](https://junglewise.ai/threats/cve-2025-64183-openexr-has-use-after-free-in-pyobject-stealattrstring)
- [PYSEC-2026-2851 - OpenEXR has buffer overflow in PyOpenEXR_old's channels() and channel()](https://junglewise.ai/threats/cve-2025-64182-openexr-has-buffer-overflow-in-pyopenexr-old-s-channels-and)
- [PYSEC-2026-2843 - OpenEXR Makes Use of Uninitialized Memory](https://junglewise.ai/threats/cve-2025-64181-openexr-use-of-uninitialized-memory-in-generic-unpack)
- [PYSEC-2026-1746 - OpenEXR Out of Bounds Heap Read due to Bad Pointer Arithmetic in LossyDctDecoder_execute](https://junglewise.ai/threats/cve-2025-48072-openexr-out-of-bounds-heap-read-due-to-bad-pointer-arithmetic-in)