Buffer overflow in Zyxel Secuextender SSL Vpn
CVE-2023-5593
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (10.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 10.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Zyxel Secuextender SSL Vpn — versions 4.0.4.0
- Zyxel Secuextender SSL Vpn Client — versions 4.0.4.0
Weakness classification (CWE)
References
- www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for… (vendor-advisory, Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-5593?
- CVE-2023-5593 is a high-severity vulnerability in Zyxel Secuextender SSL Vpn, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2023-11-20.
- How severe is CVE-2023-5593?
- High severity. CVSS v3 base score is 7.8 out of 10.