CVE-2026-63277
RCE via calcext:data-mappings, sql provider and jdbc connector
No known exploitation. EPSS puts it in the 4th percentile. Fixed in < 26.2.5.
What to do
Find your product and version, then upgrade to the build on the right.
- The Document Foundation LibreOfficeAffected: ≥ 26.2, < < 26.2.5Upgrade to: < 26.2.5Stated by: CVE record
Versions as the sources state them. Full version matrix after sign-in
What it is
From the CVE record
LibreOffice Calc can link a cell range to an external data source, and the link is saved in the document. A document could name a Java database driver for such a link to be loaded from a remote location, so opening the document could run Java code from that location. In fixed versions an entry in a Java class path has to be a file URL.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.2% chance of exploitation activity in the next 30 days, which ranks it in the 4th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
5 events over 1 day, from the signal feeds we watch.
- Record updated
- Publishedweakness classified, att&ck mapped, record updated
Affected products
Technical detail
Weaknesses
ATT&CK techniques
Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.
- Initial AccessT1195Supply Chain Compromisehigh confidence
Sources
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