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CVE-2023-23581

22
FAUCET Score

CVE-2023-23581 is a denial-of-service vulnerability affecting SoftEther VPN versions 5.01.9674 and 5.02, specifically within the vpnserver EnSafeHttpHeaderValueStr functionality. With a CVSS score of 7.5 (HIGH), this vulnerability can be exploited remotely without authentication or user interaction, leading to a denial of service. There is currently no public exploit code available, no evidence of active exploitation, and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
5.01.9674CPE matchmatch criteria
cpe:2.3:a:softether:vpn:5.01.9674:*:*:*:*:*:*:*
5.02CPE matchmatch criteria
cpe:2.3:a:softether:vpn:5.02:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.83%
Probability of exploitation in next 30 days
EPSS Percentile
53.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0083 is in the 29th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

talosintelligence.com / vulnerability_reports/TALOS-2023-1741
talosintelligence.com / vulnerability_reports/TALOS-2023-1741
ExploitThird Party Advisory