CVE-2026-5404— Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') in Wireshark
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I. Basic Information for CVE-2026-5404
Vulnerability Information
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Vulnerability Title
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') in Wireshark
Source: NVD (National Vulnerability Database)
Vulnerability Description
K12 RF5 file parser crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Wireshark 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Wireshark是导线鲨鱼（Wireshark）团队的一套网络数据包分析软件。该软件的功能是截取网络数据包，并显示出详细的数据以供分析。 Wireshark 4.6.0至4.6.4版本和4.4.0至4.4.14版本存在安全漏洞，该漏洞源于K12 RF5文件解析器崩溃，可能导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Wireshark Foundation | Wireshark | 4.6.0 ~ 4.6.5 | - |
II. Public POCs for CVE-2026-5404
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|---|
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- K12 RF5 file parser stack buffer overflow (#21094) · Issue · wireshark/wiresharkissue-trackingpermissions-required
- https://nvd.nist.gov/vuln/detail/CVE-2026-5404
Same Patch Batch · Wireshark Foundation · 2026-04-30 · 42 CVEs total
| CVE-2026-5402 | 8.8 HIGH | Heap-based Buffer Overflow in Wireshark |
| CVE-2026-5403 | 7.8 HIGH | Heap-based Buffer Overflow in Wireshark |
| CVE-2026-5405 | 7.8 HIGH | Heap-based Buffer Overflow in Wireshark |
| CVE-2026-5656 | 7.0 HIGH | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in Wireshar |
| CVE-2026-6527 | 5.5 MEDIUM | Uncontrolled Recursion in Wireshark |
| CVE-2026-6869 | 5.5 MEDIUM | Improperly Controlled Sequential Memory Allocation in Wireshark |
| CVE-2026-6519 | 5.5 MEDIUM | Loop with Unreachable Exit Condition ('Infinite Loop') in Wireshark |
| CVE-2026-6528 | 5.5 MEDIUM | Loop with Unreachable Exit Condition ('Infinite Loop') in Wireshark |
| CVE-2026-6523 | 5.5 MEDIUM | Loop with Unreachable Exit Condition ('Infinite Loop') in Wireshark |
| CVE-2026-6533 | 5.5 MEDIUM | Improperly Controlled Sequential Memory Allocation in Wireshark |
| CVE-2026-6535 | 5.5 MEDIUM | Improperly Controlled Sequential Memory Allocation in Wireshark |
| CVE-2026-5408 | 5.5 MEDIUM | Uncontrolled Recursion in Wireshark |
| CVE-2026-5409 | 5.5 MEDIUM | Uncontrolled Recursion in Wireshark |
| CVE-2026-5653 | 5.5 MEDIUM | Heap-based Buffer Overflow in Wireshark |
| CVE-2026-5655 | 5.5 MEDIUM | Use After Free in Wireshark |
| CVE-2026-5406 | 5.5 MEDIUM | Uncontrolled Recursion in Wireshark |
| CVE-2026-5401 | 5.5 MEDIUM | Uncontrolled Recursion in Wireshark |
| CVE-2026-5299 | 5.5 MEDIUM | Uncontrolled Recursion in Wireshark |
| CVE-2026-5654 | 5.5 MEDIUM | Stack-based Buffer Overflow in Wireshark |
| CVE-2026-5407 | 5.5 MEDIUM | Loop with Unreachable Exit Condition ('Infinite Loop') in Wireshark |
Showing top 20 of 42 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same vendor: Wireshark Foundation
Same weakness: CWE-120
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