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CVE-2025-13499 is a denial-of-service vulnerability in the Kafka protocol dissector in Wireshark. It affects Wireshark 4.6.0 and 4.4.0 through 4.4.10. The flaw can be triggered when Wireshark or TShark processes malformed Kafka traffic from a live capture or a crafted packet trace file. Technical analysis tied the crash to Kafka decompression handling in the dissector, where Snappy Xerial framing with a length value of 16 could cause the decompression routine to report success without initializing the decompressed tvbuff pointer. Subsequent code then used the uninitialized buffer, leading to an assertion failure in tvbuff handling and process termination.
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Referenced as part of the Wireshark 4.6.8 advisory/plugin CVE list, but not described individually in the content.
A Wireshark Kafka dissector vulnerability triggered by a malformed capture that causes an assertion failure/crash due to decompress_snappy returning success without initializing decompressed_tvb, leading to use of an uninitialized tvbuff in tvb_captured_length.
A denial-of-service style vulnerability in Wireshark's Kafka dissector that can cause Wireshark to crash when processing malformed network traffic or a malformed packet trace file.
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Cross-references every affected SKU, including bundled OEM variants.
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