diff --git a/poi-ooxml/src/main/java/org/apache/poi/xslf/usermodel/XSLFGraphicFrame.java b/poi-ooxml/src/main/java/org/apache/poi/xslf/usermodel/XSLFGraphicFrame.java
index b554cdd6a9..4dcc60e77b 100644
--- a/poi-ooxml/src/main/java/org/apache/poi/xslf/usermodel/XSLFGraphicFrame.java
+++ b/poi-ooxml/src/main/java/org/apache/poi/xslf/usermodel/XSLFGraphicFrame.java
@@ -79,7 +79,7 @@ public class XSLFGraphicFrame extends XSLFShape implements GraphicalFrame<XSLFSh
         }
 
         CTPoint2D off = xfrm.getOff();
-        if (off == null) {
+        if (off == null || off.getX() == null || off.getY() == null) {
             throw new IllegalArgumentException("Could not retrieve Off from the XML object");
         }
         double x = Units.toPoints(POIXMLUnits.parseLength(off.xgetX()));
diff --git a/test-data/slideshow/clusterfuzz-testcase-minimized-POIXSLFFuzzer-4838644450394112.pptx b/test-data/slideshow/clusterfuzz-testcase-minimized-POIXSLFFuzzer-4838644450394112.pptx
new file mode 100644
index 0000000000..b223ef94f8
Binary files /dev/null and b/test-data/slideshow/clusterfuzz-testcase-minimized-POIXSLFFuzzer-4838644450394112.pptx differ
diff --git a/test-data/spreadsheet/stress.xls b/test-data/spreadsheet/stress.xls
index e4afaf91d6..b715df6bdc 100644
Binary files a/test-data/spreadsheet/stress.xls and b/test-data/spreadsheet/stress.xls differ