SoftEther VPN 5.02.5187 is vulnerable to Buffer Overflow in the Command.c file via the…
Priority HIGH 82CWE-120Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.
Summary
SoftEther VPN 5.02.5187 is vulnerable to Buffer Overflow in the Command.c file via the PtMakeCert and PtMakeCert2048 functions. NOTE: the Supplier disputes this because the behavior only allows a user to attack himself by typing a long string on a command line.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0063 50th percentileScored 2026-11-08
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:softether:vpn:5.02.5187:*:*:*:*:*:*:* | 5.02.5187 | Vulnerable | SoftEther VPN |
- cpe:2.3:a:softether:vpn:5.02.5187:*:*:*:*:*:*:* Versions 5.02.5187 Vulnerable ·SoftEther VPN
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-25565
- 2026-10-03 Alias added: GHSA-pg35-89w5-5c5h
- 2026-10-28 EPSS moved to the 50th–90th percentile
References
More SoftEther VPN Vpn vulnerabilities
- TI-2025-19052 SoftEtherVPN 5.02.5187 is vulnerable to Use after Free in the Command.c file via the… CVSS 3.1CRITICAL 9.8
- TI-2025-19051 SoftEther VPN 5.02.5187 is vulnerable to Buffer Overflow in Internat.c via the… CVSS 3.1CRITICAL 9.8
- TI-2023-15913 An authentication bypass vulnerability exists in the CiRpcServerThread() functionality of… CVSS 3.1HIGH 7.8
- TI-2023-12241 An authentication bypass vulnerability exists in the CiRpcAccepted() functionality of… CVSS 3.1HIGH 7.8
- TI-2023-08590 Infinite loop in SoftEther VPN CVSS 3.1MEDIUM 5.9
- TI-2025-19050 Memory Leak vulnerability in SoftEtherVPN 5.02.5187 allows an attacker to cause a denial… CVSS 3.1MEDIUM 5.6
Sources
- CVE-2025-25565 · CVE Program
- CVE-2025-25565 · NVD
- FIRST EPSS
- GHSA-pg35-89w5-5c5h · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences