Application crash via unchecked DCT2000 entry count
Published Jul 8, 2026 · Updated Jul 8, 2026
Heap-based buffer overflow in Wireshark 4.4.0 through 4.4.16 and 4.6.0 through 4.6.6 allows attackers to crash it via a malformed DCT2000 capture. In attach_fp_info, an unchecked no_ddi_entries header value controls loops that write past fixed-size edch_ddi and edch_macd_pdu_size heap arrays. Exploitation requires Wireshark to dissect an injected packet or a crafted trace file, corrupting allocator metadata and terminating the process.
Summary
What happened
Heap-based buffer overflow in Wireshark 4.4.0 through 4.4.16 and 4.6.0 through 4.6.6 allows attackers to crash it via a malformed DCT2000 capture. In attach_fp_info, an unchecked no_ddi_entries header value controls loops that write past fixed-size edch_ddi and edch_macd_pdu_size heap arrays. Exploitation requires Wireshark to dissect an injected packet or a crafted trace file, corrupting allocator metadata and terminating the process.
The record
- CVE
- CVE-2026-15174
- Published
- Jul 8, 2026
- Updated
- Jul 8, 2026
- Vendor
- Wireshark Foundation
- Product
- Wireshark
- Classifications
- CWE-122, T1203
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 8, 2026CVE publishedPublication date reported by the CVE source.
- Jul 8, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=4.4.0 <4.4.17
- Affected versionversion=4.6.0 <4.6.7
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- Issue 21270 DCT2000 crash reproducerproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
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