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CVE-2013-6693

16
FAUCET Score

CVE-2013-6693 describes a denial-of-service vulnerability in the MLDP implementation of Cisco IOS 15.3(3)S and earlier, specifically impacting 7600 series routers when multiple VRFs are configured. An unauthenticated remote attacker can trigger a device reload by establishing numerous multicast flows, leading to chunk corruption. This vulnerability has a CVSS score of 5.4, indicating a medium severity, with a network attack vector and high attack complexity, resulting in a complete loss of availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 15.3\(3\)sCPE matchmatch criteria
cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*
15.3\(2\)sCPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.3\(2\)s:*:*:*:*:*:*:*
15.3sCPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.3s:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:h:cisco:7600_router:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.4MEDIUM

AV:N/AC:H/Au:N/C:N/I:N/A:C

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Exploitability Score
4.9
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.13%
Probability of exploitation in next 30 days
EPSS Percentile
63.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0113 is in the 25th percentile among its peer group of 19,958 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityNotice/CVE-2013-6693
Vendor Advisory
tools.cisco.com / security/center/viewAlert.x
Vendor Advisory