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

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-03-05 · updated 2026-06-17
Weakness: CWE-119

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.

Affected products

Ettercap: 0.8.4

References

https://github.com/Ettercap/ettercap/
https://github.com/Ettercap/ettercap/issues/1297
https://github.com/oneafter/0202/blob/main/et/repro
https://vuldb.com/?ctiid.349218
https://vuldb.com/?id.349218
https://vuldb.com/?submit.764648

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