HOMEVULNERABILITIESCVE-2023-25774
HIGH

CVE-2023-25774

CWE-400Published: October 12, 2023· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

A denial-of-service vulnerability exists in the vpnserver ConnectionAccept() functionality of SoftEther VPN 5.02. A set of specially crafted network connections can lead to denial of service. An attacker can send a sequence of malicious packets to trigger this vulnerability.

NVD Source

Technical Analysis

CVE-2023-25774 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

softether1 product(s)
vpn
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://talosintelligence.com/vulnerability_reports/TALOS-2023-1743
ADVISORYhttps://talosintelligence.com/vulnerability_reports/TALOS-2023-1743

All References (3)

→
https://talosintelligence.com/vulnerability_reports/TALOS-2023-1743Exploit · Third Party Advisory
→
https://talosintelligence.com/vulnerability_reports/TALOS-2023-1743Exploit · Third Party Advisory
→
https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1743

Quick Facts

CVE IDCVE-2023-25774
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-400
CISA KEVNo
Affected1 vendor(s)
PublishedOct 12, 2023

Related CVEs (CWE-400)

CVE-2017-9104
9.8
CVE-2018-16492
9.8
CVE-2018-16491
9.8
CVE-2018-16489
9.8
CVE-2018-16486
9.8
CVE-2023-30769
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-25774 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
← All Vulnerabilities·Search for CVE-2023-25774·NVD