# CVE-2026-63279: LibreOffice out of bounds read in PICT image import

Source: https://junglewise.ai/threats/cve-2026-63279-libreoffice-can-import-pict-images-which-may-be-embedded-in  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-22. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-63279 · Severity: info · Published 2026-09-22

LibreOffice, a document editing and creation suite, can embed PICT images in documents. When opening a specially crafted document with a malicious PICT image using a colour palette, an unchecked palette index causes the software to read memory outside the intended buffer, potentially exposing sensitive data from the process.

Technologies: [LibreOffice](https://junglewise.ai/threats/technologies/libreoffice-libreoffice). Vendors: [LibreOffice](https://junglewise.ai/threats/vendors/libreoffice).

## Quick answers

**Is CVE-2026-63279 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-63279 being exploited in the wild.

**How severe is CVE-2026-63279?** Informational severity, published 22 September 2026.

**Which products and versions are affected?** LibreOffice before 26.2.5.

**Is there a fix for CVE-2026-63279?** A patch was published on 2026-09-22: LibreOffice 26.2.5 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-63279 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-63279?** Check whether you run LibreOffice 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.

## Technical details

An out-of-bounds read vulnerability exists in PICT image import when a palette index is used without validation against the actual number of palette entries. An attacker can craft a PICT image embedded in a document where the palette index references memory beyond the palette array bounds, leaking adjacent memory contents. The fix validates the palette index against the palette size before use.

## Affected products

- LibreOffice LibreOffice before 26.2.5

## Timeline

- 2026-09-21: disclosed
- 2026-09-22: patched: LibreOffice 26.2.5

## References

- [https://www.libreoffice.org/about-us/security/advisories/cve-2026-63279](https://www.libreoffice.org/about-us/security/advisories/cve-2026-63279)

## Related threats

- [LibreOffice heap buffer overflow in dBASE index import](https://junglewise.ai/threats/cve-2026-76181-libreoffice-includes-a-dbase-database-driver-which-reads-dbase)
- [LibreOffice environment and INI file variable expansion information leak](https://junglewise.ai/threats/cve-2026-63270-urls-could-be-constructed-which-expanded-environment-variable-or)
- [LibreOffice stack buffer overflow in CFF to Type 1 font conversion](https://junglewise.ai/threats/cve-2026-63276-libreoffice-converts-cff-fonts-to-type-1-when-it-subsets-a-font)
- [LibreOffice stack buffer overflow in CFF font hint handling](https://junglewise.ai/threats/cve-2026-63275-libreoffice-can-read-cff-fonts-which-may-be-embedded-in-documents)
- [LibreOffice heap buffer overflow in WMF text record import](https://junglewise.ai/threats/cve-2026-63272-libreoffice-can-import-wmf-graphics-which-may-be-embedded-in)