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CVE-2023-23581

HIGH
7.5
CVSS Score
Published: October 12, 2023 at 03:27 PM UTC
Updated: June 17, 2026 at 05:37 AM UTC
2 products affected across 2 vendorsVPNSoftEther VPN

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Severity
HIGH7.5
Exploit prediction
EPSS 0.8%
SSVC
No known exploit

Description

A denial-of-service vulnerability exists in the vpnserver EnSafeHttpHeaderValueStr functionality of SoftEther VPN 5.01.9674 and 5.02. A specially crafted network packet can lead to denial of service.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

ExploitThird Party Advisory
Source: [email protected]
https://talosintelligence.com/vulnerability_reports/TALOS-2023-1741
Source: af854a3a-2127-422b-91ae-364da2661108
https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1741

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHtalos
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-125

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