CVE-2026-91752

GNU libextractor before 1.15 Stack Overflow via OLE2

HIGH
7.5
CVSS Score
Published: September 15, 2026 at 12:35 AM UTC
Updated: September 24, 2026 at 09:17 PM UTC
1 product affected across 1 vendorLibextractor

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Severity
HIGH7.5
Exploit prediction
EPSS 0.7%
SSVC
PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.15
Affected range stops below 1.15, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-789

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