Is CVE-2013-6693 being actively exploited?

CVE-2013-6693 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2013-6693?

CVE-2013-6693 has a CVSS 2.0 base score of 5.4 (MEDIUM).

CVE-2013-6693

MEDIUM · CVSS 5.4EPSS 1.1%EU EUVD

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.

Key facts

CVSS score: 5.4 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:H/Au:N/C:N/I:N/A:C
Weakness (CWE): CWE-119
EPSS score: 1.1% (66th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2013-6495)
Published: November 22, 2013
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2013-6495 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

cisco / 7600 router
cisco / ios
cisco / ios
cisco / ios

References

http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-6693(Vendor Advisory)
http://tools.cisco.com/security/center/viewAlert.x?alertId=31861(Vendor Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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