A vulnerability in the IPsec component of Cisco StarOS for Cisco ASR 5000 Series Routers…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
A vulnerability in the IPsec component of Cisco StarOS for Cisco ASR 5000 Series Routers could allow an unauthenticated, remote attacker to terminate all active IPsec VPN tunnels and prevent new tunnels from establishing, resulting in a denial of service (DoS) condition. Affected Products: ASR 5000 Series Routers, Virtualized Packet Core (VPC) Software. More Information: CSCvc21129. Known Affected Releases: 21.1.0 21.1.M0.65601 21.1.v0. Known Fixed Releases: 21.2.A0.65754 21.1.b0.66164 21.1.V0.66014 21.1.R0.65759 21.1.M0.65749 21.1.0.66030 21.1.0.
Why it matters now
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 |
|---|---|---|---|---|---|
| — | Cisco StarOS for ASR 5000 Series Routers | Cisco StarOS for ASR 5000 Series Routers | — | No fix listed | CNA |
- Cisco StarOS for ASR 5000 Series Routers Vendor— Affected Cisco StarOS for ASR 5000 Series Routers Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2017-3865
- 2026-10-03 Alias added: GHSA-v9jg-22vm-mw6w
References
More Cisco Staros vulnerabilities
- TI-2025-23504 Erlang/OTP SSH Vulnerable to Pre-Authentication RCE KEVCVSS 3.1CRITICAL 10.0
- TI-2019-01491 Cisco StarOS Denial of Service Vulnerability CVSS 3.0HIGH 8.6
- TI-2018-00328 Improper input validation in Cisco StarOS unknown CVSS 3.0HIGH 8.6
- TI-2021-01080 Cisco StarOS IPv4 Denial of Service Vulnerability CVSS 3.1HIGH 8.6
- TI-2018-00201 Improper input validation in Cisco StarOS CVSS 3.1HIGH 7.5
- TI-2021-01105 Cisco StarOS Denial of Service Vulnerability CVSS 3.1HIGH 7.5
Sources
- CVE-2017-3865 · CVE Program
- CVE-2017-3865 · NVD
- FIRST EPSS
- GHSA-v9jg-22vm-mw6w · 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