The MLDP implementation in Cisco IOS 15.3(3)S and earlier on 7600 routers, when many VRFs…
Priority LOW 27CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- High
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Complete
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
The MLDP implementation in Cisco IOS 15.3(3)S and earlier on 7600 routers, when many VRFs are configured, allows remote attackers to cause a denial of service (chunk corruption and device reload) by establishing many multicast flows, aka Bug ID CSCue22345.
Why it matters now
EPSS 0.01127 66th 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 · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:* | up to 15.3\(3\)s | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios:15.3\(2\)s:*:*:*:*:*:*:* | 15.3(2)s | Vulnerable | Cisco |
| cpe:2.3:o:cisco:ios:15.3s:*:*:*:*:*:*:* | 15.3s | Vulnerable | Cisco |
| cpe:2.3:h:cisco:7600_router:*:*:*:*:*:*:*:* | all versions | Vulnerable | Cisco |
- cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:* Versions up to 15.3\(3\)s Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios:15.3\(2\)s:*:*:*:*:*:*:* Versions 15.3(2)s Vulnerable ·Cisco
- cpe:2.3:o:cisco:ios:15.3s:*:*:*:*:*:*:* Versions 15.3s Vulnerable ·Cisco
- cpe:2.3:h:cisco:7600_router:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2013-6693
- 2026-10-03 Alias added: GHSA-8439-8j33-xpx5
References
More Cisco 7600 Router vulnerabilities
- TI-2012-03972 Stack-based buffer overflow in the DCERPC inspection engine on Cisco Adaptive Security… CVSS 2.0HIGH 9.0
- TI-2012-03974 The DCERPC inspection engine on Cisco Adaptive Security Appliances (ASA) 5500 series… CVSS 2.0HIGH 7.1
- TI-2012-03973 The DCERPC inspection engine on Cisco Adaptive Security Appliances (ASA) 5500 series… CVSS 2.0HIGH 7.1
- TI-2004-01008 Cisco IOS 2.2(18)EW, 12.2(18)EWA, 12.2(14)SZ, 12.2(18)S, 12.2(18)SE, 12.2(18)SV… CVSS 2.0MEDIUM 5.0
Sources
- CVE-2013-6693 · CVE Program
- CVE-2013-6693 · NVD
- FIRST EPSS
- GHSA-8439-8j33-xpx5 · GitHub Advisory Database · CC BY 4.0
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