What’s Vulnerable › Vulnerabilities

CVE-2017-5644

• Severity: medium (CVSS 5.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-03-24 · updated 2026-06-17
• Weakness: CWE-776

Description

Apache POI in versions prior to release 3.15 allows remote attackers to cause a denial of service (CPU consumption) via a specially crafted OOXML file, aka an XML Entity Expansion (XEE) attack.

Affected products

• Apache Software Foundation Apache POI: through 3.14

References

• http://poi.apache.org/#20+March+2017+-+CVE-2017-5644+-+Possible+DOS+%28Denial+of+Service%29+in+Apache+POI+versions+prior+to+3.15
• http://www.securityfocus.com/bid/96983
• https://www.oracle.com/security-alerts/cpuoct2020.html
• http://poi.apache.org/#20+March+2017+-+CVE-2017-5644+-+Possible+DOS+%28Denial+of+Service%29+in+Apache+POI+versions+prior+to+3.15
• http://www.securityfocus.com/bid/96983
• https://www.oracle.com/security-alerts/cpuoct2020.html

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