November 13, 2026

CVE Watchtower

CVE-2017-12626Apache Poi Loop with Unreachable Exit Condition (Infinite Loop)

NVDCVSS scored by 134c704f-9b21-4f2e-91b3-4a467353bcc0

Vulnerability Summary

Apache POI in versions prior to release 3.17 are vulnerable to Denial of Service Attacks: 1) Infinite Loops while parsing crafted WMF, EMF, MSG and macros (POI bugs 61338 and 61294), and 2) Out of Memory Exceptions while parsing crafted DOC, PPT and XLS (POI bugs 52372 and 61295).
Severity Level
HIGH(7.5)
Published Date
Jan 29, 2018
Last Modified
May 28, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
10.25%Probability
Root Weakness (CWE)
CWE-835: Loop with Unreachable Exit Condition (Infinite Loop) ↗
The product contains an iteration or loop with an exit condition that cannot be reached.
CVSS v3.1 Base Metrics — Score 7.5 (HIGH)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Apache Poi < 3.17
Patched Versions
  • Apache Poi 3.17

What to do

Plan remediation soon. No exploitation is confirmed yet, but the severity is high.

  1. Check whether you run Apache Poi and which version.
  2. Update to a patched version listed above, then confirm the new version.

Timeline

  • Jan 29, 2018Published
  • May 28, 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