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CVE-2026-3606— Ettercap etterfilter ef_output.c add_data_segment out-of-bounds

Quick assessment

Affected
n/a Ettercap
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Ettercap是Ettercap开源的一个针对中间人攻击的综合套件。它具有嗅探实时连接、动态内容过滤的功能。 Ettercap 0.8.4-Garofalo版本存在缓冲区错误漏洞，该漏洞源于etterfilter组件中文件src/ettercap/utils/etterfilter/ef_output.c的函数add_data_segment存在越界读取。

CVSS 3.3 · Low EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2026-3606

Vulnerability Information
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Vulnerability Title
Ettercap etterfilter ef_output.c add_data_segment out-of-bounds
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability has been found in Ettercap 0.8.4-Garofalo. Affected by this vulnerability is the function add_data_segment of the file src/ettercap/utils/etterfilter/ef_output.c of the component etterfilter. The manipulation leads to out-of-bounds read. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
Ettercap 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Ettercap是Ettercap开源的一个针对中间人攻击的综合套件。它具有嗅探实时连接、动态内容过滤的功能。 Ettercap 0.8.4-Garofalo版本存在缓冲区错误漏洞，该漏洞源于etterfilter组件中文件src/ettercap/utils/etterfilter/ef_output.c的函数add_data_segment存在越界读取。
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
- Ettercap 0.8.4-Garofalo cpe:2.3:a:ettercap:ettercap:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-3606

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III. Intelligence Information for CVE-2026-3606

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Vendor Advisories for CVE-2026-3606 (3)

Proof of Concept for CVE-2026-3606 (1)

Vendor Pages for CVE-2026-3606 (1)

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IV. Related Vulnerabilities

Same product: Ettercap
Same vendor: n/a
Same weakness: CWE-125

V. Comments for CVE-2026-3606

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