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CVE-2023-27395

27
FAUCET Score

CVE-2023-27395 is a critical heap-based buffer overflow vulnerability in the WpcParsePacket() function of SoftEther VPN versions 4.41-9782-beta, 5.01.9674, and 5.02. This vulnerability carries a high CVSS score of 8.1, indicating a severe risk. An attacker can exploit this by performing a man-in-the-middle attack with a specially crafted network packet, leading to arbitrary code execution. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion, with 10 mentions, suggesting awareness and potential for future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
4.41-9782CPE matchmatch criteria
cpe:2.3:a:softether:vpn:4.41-9782:beta:*:*:*:*:*:*
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

9.0CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.54%
Probability of exploitation in next 30 days
EPSS Percentile
72.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0154 is in the 30th percentile among its peer group of 8,920 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 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-2023-1735
talosintelligence.com / vulnerability_reports/TALOS-2023-1735
ExploitThird Party Advisory
softether.org / 9-about/News/904-SEVPN202301
PatchVendor Advisory