PT-2023-21187 · Softether · Softether Vpn

Lilith >_> · Published 2023-10-12 · Updated 2025-04-23 · CVE-2023-27516

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions SoftEther VPN versions 4.41-9782-beta through 5.01.9674

Description An authentication bypass issue exists in the CiRpcAccepted() functionality. A specially crafted network packet can lead to unauthorized access. An attacker can send a network request to trigger this issue.

Recommendations For versions 4.41-9782-beta through 5.01.9674, as a temporary workaround, consider disabling the CiRpcAccepted() functionality until a patch is available. At the moment, there is no information about a newer version that contains a fix for this issue.

Exploit

Fix

Weakness Enumeration

CWE-453

CWE-1188

Related Identifiers

CVE-2023-27516

Affected Products

Softether Vpn

References · 7

• 🔥 https://talosintelligence.com/vulnerability_reports/TALOS-2023-1754 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2023-27516 · Security Note
• https://softether.org/9-about/News/904-SEVPN202301 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-27516 · Vendor Advisory
• https://twitter.com/VulmonFeeds/status/1712541336329417196 · Twitter Post
• https://t.me/cibsecurity/72185 · Telegram Post
• https://twitter.com/hee_gyong/status/1914834849673728414 · Twitter Post