8.7

CVE-2026-91752

Exploit

GNU libextractor before 1.15 Stack Overflow via OLE2

GNU libextractor before 1.15 contains a stack-based buffer overflow vulnerability in the process_star_office function that sizes a variable-length stack array from attacker-controlled OLE2 stream data. Attackers can craft malicious StarOffice documents that allocate up to 4 MB on the stack, causing stack overflow and crashing any application extracting metadata from the document.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerGNU
≫
Produkt libextractor
Default Statusunaffected
Version 0
Version < 1.15
Status affected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.39% 0.323
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
disclosure@vulncheck.com 8.7 0 0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/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
disclosure@vulncheck.com 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-789 Memory Allocation with Excessive Size Value

The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.

https://github.com/Haitam-lazaar/libextractor-ole2-rce
https://git.gnunet.org/gnunet/libextractor/commit/04004eb19033e093938138b09befdf31e71e8522.html
https://git.gnunet.org/gnunet/libextractor/commit/2781c7e9095f4ddaff4f535d69342f3903b18422.html
https://www.gnu.org/software/libextractor/
https://www.vulncheck.com/advisories/gnu-libextractor-before-1.15-stack-overflow-via-ole2
http://www.openwall.com/lists/oss-security/2026/09/16/16