What is CVE-2023-32634?

CVE-2023-32634 is a high-severity vulnerability in Softether Vpn, classified under Channel Accessible by Non-Endpoint. CVSS score: 7.8/10. Published 2023-10-12.

How severe is CVE-2023-32634?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Softether Vpn

CVE-2023-32634

An authentication bypass vulnerability exists in the CiRpcServerThread() functionality of SoftEther VPN 5.01.9674 and 4.41-9782-beta. An attacker can perform a local man-in-the-middle attack to trigger this vulnerability.

Published 2023-10-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (35.4th percentile), scored 2026-10-19.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Softether Vpn — versions 4.41-9782, 5.01.9674
Softether Vpn — versions 4.41-9782-beta, 5.01.9674

Weakness classification (CWE)

CWE-300 — Channel Accessible by Non-Endpoint

References

talosintelligence.com/vulnerability_reports/TALOS-2023-1755 (Exploit, Third Party Advisory)
www.softether.org/9-about/News/904-SEVPN202301 (Patch, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2023-32634?: CVE-2023-32634 is a high-severity vulnerability in Softether Vpn, classified under Channel Accessible by Non-Endpoint. CVSS score: 7.8/10. Published 2023-10-12.
How severe is CVE-2023-32634?: High severity. CVSS v3 base score is 7.8 out of 10.