Ettercap up to 0.8.3 GG Dissector src/dissectors/ec_gg.c FUNC_DECODER gg heap-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Ettercap up to 0.8.3. The impacted element is the function FUNC_DECODER of the file src/dissectors/ec_gg.c of the component GG Dissector. The manipulation of the argument gg results in heap-based overflow. This vulnerability was named CVE-2026-9365. The attack may be performed from remote. In addition, an exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical has been found in Ettercap up to 0.8.3. Affected is the function FUNC_DECODER of the file src/dissectors/ec_gg.c of the component GG Dissector. The manipulation of the argument gg with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-9365. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known.

The exploit is shared for download at github.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 316596 (Linux Distros Unpatched Vulnerability : CVE-2026-9365), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 0.8.4 eliminates this vulnerability. Applying the patch feeae6fa366e01a3dd9f1857ec6aae847b2ae00c is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (316596) and EUVD (EUVD-2026-31576). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.6
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 316596
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-9365

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Ettercap 0.8.4
Patch: feeae6fa366e01a3dd9f1857ec6aae847b2ae00c

Timelineinfo

05/23/2026 Advisory disclosed
05/23/2026 +0 days VulDB entry created
05/26/2026 +3 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 1306
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2026-9365 (🔒)
GCVE (CVE): GCVE-0-2026-9365
GCVE (VulDB): GCVE-100-365328
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/23/2026 12:33
Updated: 05/26/2026 04:25
Changes: 05/23/2026 12:33 (63), 05/25/2026 08:00 (1), 05/26/2026 04:25 (2)
Complete: 🔍
Submitter: dapickle
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #813142: Ettercap <=v0.8.4 Heap-based Buffer Overflow (by dapickle)

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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