CVE-2026-3606Public exploit

Local compiler crash via overlong memcpy

Published Mar 5, 2026 · Updated Mar 5, 2026

Out-of-bounds read in Ettercap 0.8.4-Garofalo allows local users to crash etterfilter with a crafted filter script. During filter compilation, add_data_segment copies slen + 1 bytes from a parser-allocated string that can contain only slen bytes, reading past its heap buffer. A local user who can invoke etterfilter and supply a filter file can terminate that compiler process; upstream reports no impact beyond the crash.

CVSS severity3.3
Low
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Ettercap 0.8.4-Garofalo allows local users to crash etterfilter with a crafted filter script. During filter compilation, add_data_segment copies slen + 1 bytes from a parser-allocated string that can contain only slen bytes, reading past its heap buffer. A local user who can invoke etterfilter and supply a filter file can terminate that compiler process; upstream reports no impact beyond the crash.

The record

CVE
CVE-2026-3606
Published
Mar 5, 2026
Updated
Mar 5, 2026
Vendor
Ettercap Project
Product
Ettercap
Classifications
CWE-119, CWE-125, CWE-787, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 5, 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.

  1. Affected versionversion=0.8.4-Garofalo

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Ettercap Project · Ettercapversion=0.8.4-Garofalo

Published CVSS scores

1.9VulDBCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
1.7VulDBAV:L/AC:L/Au:S/C:N/I:N/A:P
3.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-125Out-of-bounds Read
CWE-787Out-of-bounds Write
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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