# MS SWIFT Deserialization RCE Vulnerability

Source: https://junglewise.ai/threats/ms-swift-deserialization-rce-vulnerability-6bbb7913  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-07-31  
License: CC BY 4.0 with a link back

Severity: medium · CVSS 4 · Published 2025-07-31

MS SWIFT Deserialization RCE Vulnerability

Technologies: [ms-swift (PyPI)](https://junglewise.ai/threats/technologies/ms-swift). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is This vulnerability exploited in the wild?** No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.

**How severe is This vulnerability?** Medium severity, with a CVSS score of 4, published 31 July 2025.

**Which products and versions are affected?** ms-swift (PyPI) ECOSYSTEM:introduced=0,last_affected=3.6.3.

**Is there a fix for This vulnerability?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected?** Check whether you run ms-swift (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.

## Affected products

- ms-swift (PyPI) ECOSYSTEM:introduced=0,last_affected=3.6.3

## Related threats

- [PYSEC-2026-1682 - MS SWIFT WEB-UI RCE Vulnerability](https://junglewise.ai/threats/cve-2025-41419-ms-swift-web-ui-rce-vulnerability)
- [PYSEC-2026-1683 - MS SWIFT Remote Code Execution via unsafe PyYAML deserialization](https://junglewise.ai/threats/cve-2025-50460-ms-swift-remote-code-execution-via-unsafe-pyyaml-deserialization)
- [ModelScope ms-swift Weak Hash in PIL Image Cache Key Handler](https://junglewise.ai/threats/cve-2026-10801-modelscope-ms-swift-weak-hash-in-pil-image-cache-key-handler)