November 13, 2026

CVE Watchtower

CVE-2017-5644Apache Poi

NVDCVSS scored by NVD (NIST)

Vulnerability Summary

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.
Severity Level
MEDIUM(5.5)
Published Date
Mar 24, 2017
Last Modified
May 13, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.66%Probability
Root Weakness (CWE)
CWE-776 β†—
See the MITRE CWE entry for the full definition of this weakness.
CVSS v3.0 Base Metrics — Score 5.5 (MEDIUM)
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack VectorLocal
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Apache Poi <= 3.14
Patched Versions
No patched version published yet
Until a fix ships, reduce exposure:
  • Restrict access to the affected service or interface to trusted networks.
  • Disable the affected feature if you do not need it.
  • Watch the vendor advisory for a firmware or software update.

What to do

Fix it during your normal patch cycle. No exploitation is confirmed yet.

  1. Check whether you run Apache Poi and which version.
  2. No patched version is listed yet. Limit access to the affected service to trusted networks, and disable the feature if you can.
  3. Subscribe to the vendor advisory so you learn when a fix ships.

Timeline

  • Mar 24, 2017Published
  • May 13, 2026Record last modified

Score, severity and exploitation changes are tracked from the day Watchtower started logging them.

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External References

Data last checked: Nov 13, 2026 21:28 UTC