Cisco VPN 3000 series concentrators before 2.5.2(F) allow remote attackers to cause a…
Priority LOW 36CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Complete
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
Cisco VPN 3000 series concentrators before 2.5.2(F) allow remote attackers to cause a denial of service via a flood of invalid login requests to (1) the SSL service, or (2) the telnet service, which do not properly disconnect the user after several failed login attempts.
Why it matters now
EPSS 0.02518 84th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
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 · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:h:cisco:vpn_3000_concentrator:*:*:*:*:*:*:*:* | all versions | Vulnerable | Cisco |
| cpe:2.3:h:cisco:vpn_3005_concentrator:*:*:*:*:*:*:*:* | all versions | Vulnerable | Cisco |
| cpe:2.3:h:cisco:vpn_3015_concentrator:*:*:*:*:*:*:*:* | all versions | Vulnerable | Cisco |
| cpe:2.3:h:cisco:vpn_3030_concentator:*:*:*:*:*:*:*:* | all versions | Vulnerable | Cisco |
| cpe:2.3:h:cisco:vpn_3060_concentrator:*:*:*:*:*:*:*:* | all versions | Vulnerable | Cisco |
| cpe:2.3:h:cisco:vpn_3080_concentrator:*:*:*:*:*:*:*:* | all versions | Vulnerable | Cisco |
- cpe:2.3:h:cisco:vpn_3000_concentrator:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Cisco
- cpe:2.3:h:cisco:vpn_3005_concentrator:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Cisco
- cpe:2.3:h:cisco:vpn_3015_concentrator:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Cisco
- cpe:2.3:h:cisco:vpn_3030_concentator:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Cisco
- cpe:2.3:h:cisco:vpn_3060_concentrator:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Cisco
- cpe:2.3:h:cisco:vpn_3080_concentrator:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2001-0427
- 2026-10-03 Alias added: GHSA-6868-m557-3x86
References
Other 1
More Cisco Vpn 3000 Concentrator vulnerabilities
- TI-2005-01913 Cisco VPN 3000 Concentrator before 4.1.7.F allows remote attackers to determine valid… CVSS 2.0MEDIUM 5.0
- TI-2010-04087 The remote-access IPSec VPN implementation on Cisco Adaptive Security Appliances (ASA)… CVSS 2.0MEDIUM 5.0
Sources
- CVE-2001-0427 · CVE Program
- CVE-2001-0427 · NVD
- FIRST EPSS
- GHSA-6868-m557-3x86 · 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