CVE-2023-28807

MEDIUM

Zscaler Internet Access < 6.2r.290 - Improper Certificate Validation via SNI Mismatch

Title source: llm
STIX 2.1

Description

In Zscaler Internet Access (ZIA) a mismatch between Connect Host and Client Hello's Server Name Indication (SNI) enables attackers to evade network security controls by hiding their communications within legitimate traffic.

References (2)

Core 2

Scores

CVSS v3 5.1
EPSS 0.0034
EPSS Percentile 25.9%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-295
Status published
Products (1)
zscaler/secure_internet_and_saas_access < 6.2r.290
Published Jan 31, 2024
Tracked Since Feb 18, 2026