Cisco routers 9.17 and earlier allow remote attackers to bypass security restrictions via…
Priority LOW 37Published · 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
- Partial · Partial · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
Cisco routers 9.17 and earlier allow remote attackers to bypass security restrictions via certain IP source routed packets that should normally be denied using the "no ip source-route" command.
Why it matters now
EPSS 0.02081 81st 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 · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:h:cisco:router:*:*:*:*:*:*:*:* | up to 9.17 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:router:8.2:*:*:*:*:*:*:* | 8.2 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:router:8.3:*:*:*:*:*:*:* | 8.3 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:router:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:router:9.1:*:*:*:*:*:*:* | 9.1 | Vulnerable | Cisco |
- cpe:2.3:h:cisco:router:*:*:*:*:*:*:*:* Versions up to 9.17 Vulnerable ·Cisco
- cpe:2.3:h:cisco:router:8.2:*:*:*:*:*:*:* Versions 8.2 Vulnerable ·Cisco
- cpe:2.3:h:cisco:router:8.3:*:*:*:*:*:*:* Versions 8.3 Vulnerable ·Cisco
- cpe:2.3:h:cisco:router:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Cisco
- cpe:2.3:h:cisco:router:9.1:*:*:*:*:*:*:* Versions 9.1 Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-1999-1216
- 2026-10-03 Alias added: GHSA-hq37-hh2w-qq3f
References
Patch 2
More Cisco Router vulnerabilities
- TI-1999-00793 Denial of service in Cisco routers running NAT via a PORT command from an FTP client to a Telnet port. CVSS 2.0MEDIUM 5.0
- TI-1999-00448 An attacker can identify a CISCO device by sending a SYN packet to port 1999, which is… CVSS 2.0MEDIUM 5.0
- TI-1999-00219 Denial of service in Cisco IOS web server allows attackers to reboot the router using a long URL. CVSS 2.0MEDIUM 5.0
Sources
- CVE-1999-1216 · CVE Program
- CVE-1999-1216 · NVD
- FIRST EPSS
- GHSA-hq37-hh2w-qq3f · 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