ECHO-5250-FD80-297A Heap buffer overflow when replaying deferred OOXML parser events for a text box element, fixed upstream in LibreOffice 25.8.7 and 26.2.3. Debian trixie ships LibreOffice 25.2.3, which does not contain the vulnerable code: the Debian security team marks trixie (and bookworm) as not-affected ("Vulnerable code not present"). No Echo patch is required. Re-evaluate if this spec is ever rebased to a newer LibreOffice release that predates the upstream fix. https://security-tracker.debian.org/tracker/CVE-2026-6047
| Reporter | Title | Published | Views | Family All 20 |
|---|---|---|---|---|
 | ANT-2026-0HC68EK6 · LibreOffice · Heap Buffer Overflow | 17 Aug 202617:47 | – | anthropic |
 | LibreOffice Buffer Overflow DoS | 9 Jul 202600:00 | – | bdu_fstec |
 | CVE-2026-6047 | 15 Jun 202616:22 | – | cve |
 | CVE-2026-6047 Heap buffer overflow in OOXML text box element import | 15 Jun 202616:22 | – | cvelist |
 | CVE-2026-6047 | 15 Jun 202616:22 | – | debiancve |
 | EUVD-2026-36737 | 15 Jun 202616:22 | – | euvd |
 | CVE-2026-6047 | 15 Jun 202616:22 | – | mend |
 | CVE-2026-6047 | 15 Jun 202618:16 | – | nvd |
 | DEBIAN-CVE-2026-6047 | 15 Jun 202618:16 | – | osv_debian |
 | SUSE-SU-2026:3140-1 Security update for libreoffice | 20 Jul 202618:01 | – | osv_suse |
10
| Source | Link |
|---|---|
| advisory | www.advisory.echohq.com/cve/CVE-2026-6047 |
| cve | www.cve.org/CVERecord |
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29 Sep 2026 11:45Current
5.8Medium risk
Vulners AI Score5.8
CVSS 46.9
EPSS0.00167
SSVC