What is CVE-2026-80443?

CVE-2026-80443 is a high-severity vulnerability, classified under Improper Certificate Validation. CVSS score: 7.4/10. Published 2026-10-02.

How severe is CVE-2026-80443?

High severity. CVSS v3 base score is 7.4 out of 10.

CVE-2026-80443

CVE-2026-80443

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.

Vulnerability class: Improper Certificate Validation

Published 2026-10-02 · last modified 2026-10-02.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

References

siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-1241 (government-resource)

Frequently asked questions

What is CVE-2026-80443?: CVE-2026-80443 is a high-severity vulnerability, classified under Improper Certificate Validation. CVSS score: 7.4/10. Published 2026-10-02.
How severe is CVE-2026-80443?: High severity. CVSS v3 base score is 7.4 out of 10.