CVE-2013-6693 — 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

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MEDIUM

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

Published Nov 22, 2013

5.4

MEDIUM

CVSS 2.0

EPSS 1.13%

Description

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.

Affected products

Remediation

No remediation recorded yet.

Metrics

1.13% 0.01127

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.

EPSS probability 0.01127

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (10 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 3, 2026	1.13% (0.01127)	65.18th	v5 (v2026.06.15)
Jun 15, 2026	1.13% (0.01127)	62.00th	v5 (v2026.06.15)
Mar 17, 2025	0.37% (0.00371)	56.80th	v4 (v2025.03.14)
Dec 12, 2024	0.18% (0.00181)	56.68th	v3 (v2023.03.01)
Jul 10, 2024	0.19% (0.00186)	56.24th	v3 (v2023.03.01)
Mar 7, 2023	0.19% (0.00186)	54.19th	v3 (v2023.03.01)
Mar 6, 2023	1.05% (0.01055)	52.13th	v2 (v2022.01.01)
Sep 17, 2022	1.05% (0.01055)	50.47th	v2 (v2022.01.01)
Apr 1, 2022	1.05% (0.01055)	48.43th	v2 (v2022.01.01)
Feb 4, 2022	1.05% (0.01055)	27.52th	v2 (v2022.01.01)

Weaknesses (1)

CWE-119

Buffer Overflow

References (2)

http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-6693
vendor-advisoryx_refsource_CISCOVendor Advisory
http://tools.cisco.com/security/center/viewAlert.x?alertId=31861
x_refsource_CONFIRMVendor Advisory

Link	Providers	Tags
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-6693		vendor-advisoryx_refsource_CISCOVendor Advisory
http://tools.cisco.com/security/center/viewAlert.x?alertId=31861		x_refsource_CONFIRMVendor Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner cisco

Published Nov 22, 2013

Updated Aug 6, 2024

Reserved Nov 7, 2013

Link CVE-2013-6693

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2013-6693

Red Hat

Severity n/a

Public date n/a

Links CVE-2013-6693