How severe is CVE-2023-22325?

CVE-2023-22325 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-22325 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-22325?

CVE-2023-22325 primarily affects Softether Vpn. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-22325?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-22325 published?

CVE-2023-22325 was published on 2023-10-12 and last updated on 2026-06-17.

CVE-2023-22325

CVE-2023-22325 is a medium-severity vulnerability in Softether Vpn with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-835.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-835
Affected product: Softether Vpn
Published: 2023-10-12
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2023-22325?: CVE-2023-22325 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-22325 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-22325?: CVE-2023-22325 primarily affects Softether Vpn. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-22325?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-22325 published?: CVE-2023-22325 was published on 2023-10-12 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:softether:vpn:4.41-9782:beta:*:*:*:*:*:*
cpe:2.3:a:softether:vpn:5.01.9674:*:*:*:*:*:*:*
cpe:2.3:a:softether:vpn:5.02:*:*:*:*:*:*:*

More vulnerabilities in Softether Vpn

CVE-2025-25568 — Critical (CVSS 9.8): SoftEtherVPN 5.02.5187 is vulnerable to Use after Free in the Command.c file via the CheckNetworkAcceptThread function.…
CVE-2025-25567 — Critical (CVSS 9.8): SoftEther VPN 5.02.5187 is vulnerable to Buffer Overflow in Internat.c via the UniToStrForSingleChars function. NOTE:…
CVE-2025-25565 — Critical (CVSS 9.8): SoftEther VPN 5.02.5187 is vulnerable to Buffer Overflow in the Command.c file via the PtMakeCert and PtMakeCert2048…
CVE-2023-27395 — Critical (CVSS 9.0): A heap-based buffer overflow vulnerability exists in the vpnserver WpcParsePacket() functionality of SoftEther VPN…
CVE-2023-32634 — High (CVSS 7.8): An authentication bypass vulnerability exists in the CiRpcServerThread() functionality of SoftEther VPN 5.01.9674 and…
CVE-2023-25774 — High (CVSS 7.5): A denial-of-service vulnerability exists in the vpnserver ConnectionAccept() functionality of SoftEther VPN 5.02. A set…

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