---
id: CVE-2026-80443
title: Improper certificate validation vulnerability in HAVELSAN Inc
summary: "Improper certificate validation vulnerability in HAVELSAN Inc. Sef - AI Chatbot Platform allows Adversary in the Middle (AiTM).\n\nThis issue affects Sef - AI Chatbot Platform: before 2.1.\_NOTE: The vendor was contacted and it was learned …"
severity: high
cvss: 7.4
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-295
vendor: HAVELSAN Inc.
product: Sef - AI Chatbot Platform
affected:
  - sef_-_ai_chatbot_platform < 2.1
published: '2026-10-02'
updated: '2026-10-02'
sourceUpdated: '2026-10-02T15:17:10.993'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80443'
references:
  - url: 'https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-1241'
    label: iletisim@usom.gov.tr
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-02T13:32:19.840781Z'
epss: 0.00163
epssPercentile: 0.05437
ingestedAt: '2026-10-02T09:15:03.056Z'
---

## Overview

Improper certificate validation vulnerability in HAVELSAN Inc. Sef - AI Chatbot Platform allows Adversary in the Middle (AiTM).

This issue affects Sef - AI Chatbot Platform: before 2.1. NOTE: The vendor was contacted and it was learned that the product is not supported.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.