What is CVE-2023-22325?

CVE-2023-22325 is a medium-severity vulnerability in Softether Vpn, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 5.9/10. Published 2023-10-12.

How severe is CVE-2023-22325?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Vulnerability in Softether Vpn

CVE-2023-22325

A denial of service vulnerability exists in the DCRegister DDNS_RPC_MAX_RECV_SIZE functionality of SoftEther VPN 4.41-9782-beta, 5.01.9674 and 5.02. A specially crafted network packet can lead to denial of service. An attacker can perform a 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 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.010 (59.9th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Softether Vpn — versions 4.41-9782, 5.01.9674, 5.02
Softether Vpn — versions 4.41-9782-beta, 5.01.9674, 5.02

Weakness classification (CWE)

CWE-835 — Loop with Unreachable Exit Condition (Infinite Loop)

References

talosintelligence.com/vulnerability_reports/TALOS-2023-1736 (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-2023-22325?: CVE-2023-22325 is a medium-severity vulnerability in Softether Vpn, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 5.9/10. Published 2023-10-12.
How severe is CVE-2023-22325?: Medium severity. CVSS v3 base score is 5.9 out of 10.