# CVE-2026-90628: Apache OpenOffice stack overflow in PDF export CFF font parsing

Source: https://junglewise.ai/threats/cve-2026-90628-an-uncontrolled-memory-access-in-the-pdf-export-code-of-apache  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-04. Updated: 2026-11-04  
License: CC BY 4.0 with a link back

CVE-2026-90628 · Severity: info · Published 2026-11-04

Apache OpenOffice's PDF export feature contains a memory handling flaw when processing crafted CFF fonts. An attacker could provide a malicious document that crashes OpenOffice or potentially causes data corruption or unintended code execution when a user exports to PDF.

Technologies: [Apache OpenOffice](https://junglewise.ai/threats/technologies/openoffice). Vendors: [Apache](https://junglewise.ai/threats/vendors/apache).

## Quick answers

**Is CVE-2026-90628 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-90628 being exploited in the wild.

**How severe is CVE-2026-90628?** Informational severity, published 4 November 2026.

**Which products and versions are affected?** Apache OpenOffice through 4.1.16.

**Is there a fix for CVE-2026-90628?** Yes: fixed in 4.1.17. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-90628 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-90628?** Check whether you run Apache OpenOffice 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

- Fixed in 4.1.17

## Technical details

The vulnerability is an uncontrolled memory access (stack overflow) in the PDF export code when parsing Compact Font Format (CFF) fonts. It requires user interaction—opening and exporting a crafted document to PDF—and can result in program crash, memory corruption, or code execution. A fix is available in version 4.1.17.

## Affected products

- Apache OpenOffice through 4.1.16

## Timeline

- 2026-11-04: advisory

## References

- [https://lists.apache.org/thread.html/15onpdrzqny5y5qtmdv4lnvptxlvmg05](https://lists.apache.org/thread.html/15onpdrzqny5y5qtmdv4lnvptxlvmg05)

## Related threats

- [Apache OpenOffice heap buffer overflow in DXF parsing](https://junglewise.ai/threats/cve-2026-59267-a-crafted-dxf-document-causes-a-heap-buffer-overflow-in-draw-in)
- [Apache OpenOffice out-of-bounds memory write in PDF import](https://junglewise.ai/threats/cve-2026-90634-an-uncontrolled-memory-access-in-the-pdf-import-code-of-apache)
- [Apache OpenOffice file disclosure via GStreamer multimedia handling](https://junglewise.ai/threats/cve-2026-90632-apache-openoffice-documents-can-include-multimedia-content-audio)
- [Apache OpenOffice external link loading without authorization](https://junglewise.ai/threats/cve-2026-90631-apache-openoffice-documents-can-contain-links-a-missing)
- [Apache OpenOffice memory access violation in WMF import](https://junglewise.ai/threats/cve-2026-90629-an-uncontrolled-memory-access-in-the-wmf-import-code-of-apache)