CVE-2026-63279Out of bounds read in PICT image import

5.4MediumCVSS base score
0.15%Exploitation in 30 daysEPSS · top 95% of all CVEs
NoKnown exploitednot in CISA's KEV catalog
NonePublic exploitsnone known yet

Description

LibreOffice can import PICT images, which may be embedded in documents. An out of bounds read existed when importing an image that uses a colour palette. The palette index held in the image data was used without being checked against the number of entries the palette has, so an index past the last entry read memory outside the palette. In fixed versions the palette index is limited to the entries present.

Timeline

2026
16 Jul 2026
16 Jul 2026
ID reserved
By Document Fdn.
22 Sept 20262 months later
22 Sept 2026· 2 months later
Published

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2026-63279, by who scored it
Scored by	CVSS	Score	Vector
Document Fdn.CNA (assigner)	4.0	Medium5.4	CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:P
NVDNVD · Deferred	4.0	Medium5.4	CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS (exploitation in 30 days): 0.15% · top 95% of all CVEs (13 Nov 2026)
CISA SSVC: Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.4.

Affected products

The Document Foundation · LibreOffice
- affected 26.2 – < < 26.2.5

References1

https://www.libreoffice.org/about-us/security/advisories/cve-2026-63279 (opens in a new tab)

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

[![CVE-2026-63279](https://cveledger.app/badge/CVE-2026-63279.svg)](https://cveledger.app/cve/CVE-2026-63279)

Record last updated 22 Sept 2026, 12:16 UTC.