Buffer overflows in Cisco Virtual Private Network (VPN) Client 3.5.4 and earlier allows…
Priority LOW 25Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
Buffer overflows in Cisco Virtual Private Network (VPN) Client 3.5.4 and earlier allows remote attackers to cause a denial of service via (1) an Internet Key Exchange (IKE) with a large Security Parameter Index (SPI) payload, or (2) an IKE packet with a large number of valid payloads.
Why it matters now
EPSS 0.01299 70th 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 · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:vpn_client:3.5.1:*:linux:*:*:*:*:* | 3.5.1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:vpn_client:3.5.1:*:mac_os_x:*:*:*:*:* | 3.5.1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:vpn_client:3.5.1:*:solaris:*:*:*:*:* | 3.5.1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:vpn_client:3.5.1:*:windows:*:*:*:*:* | 3.5.1 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:vpn_client:3.5.2:*:linux:*:*:*:*:* | 3.5.2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:vpn_client:3.5.2:*:mac_os_x:*:*:*:*:* | 3.5.2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:vpn_client:3.5.2:*:solaris:*:*:*:*:* | 3.5.2 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:vpn_client:3.5.2:*:windows:*:*:*:*:* | 3.5.2 | Vulnerable | Cisco |
- cpe:2.3:a:cisco:vpn_client:3.5.1:*:linux:*:*:*:*:* Versions 3.5.1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:vpn_client:3.5.1:*:mac_os_x:*:*:*:*:* Versions 3.5.1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:vpn_client:3.5.1:*:solaris:*:*:*:*:* Versions 3.5.1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:vpn_client:3.5.1:*:windows:*:*:*:*:* Versions 3.5.1 Vulnerable ·Cisco
- cpe:2.3:a:cisco:vpn_client:3.5.2:*:linux:*:*:*:*:* Versions 3.5.2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:vpn_client:3.5.2:*:mac_os_x:*:*:*:*:* Versions 3.5.2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:vpn_client:3.5.2:*:solaris:*:*:*:*:* Versions 3.5.2 Vulnerable ·Cisco
- cpe:2.3:a:cisco:vpn_client:3.5.2:*:windows:*:*:*:*:* Versions 3.5.2 Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2002-0852
- 2026-10-03 Alias added: GHSA-6x9q-xfp2-gxg6
References
More Cisco Vpn Client vulnerabilities
- TI-2002-01078 Cisco Virtual Private Network (VPN) Client software 2.x.x, and 3.x before 3.5.2B, does… CVSS 2.0HIGH 7.5
- TI-2002-01369 Buffer overflow in the vpnclient program for UNIX VPN Client before 3.5.2 allows local… CVSS 2.0HIGH 7.2
- TI-2002-01077 Cisco Virtual Private Network (VPN) Client software 2.x.x, and 3.x before 3.5.1C, does… CVSS 2.0HIGH 7.5
- TI-2015-06310 Cisco VPN Client 5.x through 5.0.07.0440 uses weak permissions for vpnclient.ini, which… CVSS 2.0HIGH 7.2
- TI-2006-02587 Unspecified vulnerability in the VPN Client for Windows Graphical User Interface (GUI)… CVSS 2.0HIGH 7.2
- TI-2012-02639 Untrusted search path vulnerability in Cisco VPN Client 5.0 allows local users to gain… CVSS 2.0MEDIUM 6.9
Sources
- CVE-2002-0852 · CVE Program
- CVE-2002-0852 · NVD
- FIRST EPSS
- GHSA-6x9q-xfp2-gxg6 · GitHub Advisory Database · CC BY 4.0
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