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CVE-2023-27516

HIGH
7.8
CVSS Score
Published: October 12, 2023 at 03:27 PM UTC
Updated: June 17, 2026 at 05:45 AM UTC
2 products affected across 2 vendorsVPNSoftEther VPN

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Severity
HIGH7.8
Exploit prediction
EPSS 0.5%
SSVC
PoC

Description

An authentication bypass vulnerability exists in the CiRpcAccepted() functionality of SoftEther VPN 4.41-9782-beta and 5.01.9674. A specially crafted network packet can lead to unauthorized access. An attacker can send a network request to trigger this vulnerability.

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. What the record does show:

Patch and advisory references

References (3)

ExploitThird Party Advisory
Source: [email protected]
https://talosintelligence.com/vulnerability_reports/TALOS-2023-1754
PatchVendor Advisory
Source: [email protected]
https://www.softether.org/9-about/News/904-SEVPN202301
Source: af854a3a-2127-422b-91ae-364da2661108
https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1754

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

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

CVSS

7.8HIGH[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-453CWE-1188

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