High severity7.8NVD Advisory· Published Nov 20, 2023· Updated Jun 17, 2026

CVE-2023-5593

Description

The out-of-bounds write vulnerability in the Windows-based SecuExtender SSL VPN Client software version 4.0.4.0 could allow an authenticated local user to gain a privilege escalation by sending a crafted CREATE message.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Zyxel/SecuExtender SSL VPN Clientllm-fuzzy2 versions
= 4.0.4.0+ 1 more
- (no CPE)range: = 4.0.4.0
- (no CPE)range: 4.0.4.0
Zyxel/Secuextender SSL VPN
cpe:2.3:a:zyxel:secuextender_ssl_vpn:4.0.4.0:*:*:*:*:windows:*:*

Patches

Vulnerability mechanics

References

www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-out-of-bounds-write-vulnerability-in-secuextender-ssl-vpn-client-softwarenvdPatchVendor Advisory

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