How severe is CVE-2013-6693?

CVE-2013-6693 has a CVSS 2.0 base score of 5.4, rated medium severity.

Is CVE-2013-6693 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-6693?

CVE-2013-6693 primarily affects Cisco Ios. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-6693?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2013-6693 published?

CVE-2013-6693 was published on 2013-11-22 and last updated on 2026-06-17.

CVE-2013-6693

CVE-2013-6693 is a medium-severity vulnerability in Cisco Ios with a CVSS 2.0 base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: Medium (CVSS 2.0 base score 5.4)
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Cisco Ios
Published: 2013-11-22
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2013-6693?: CVE-2013-6693 has a CVSS 2.0 base score of 5.4, rated medium severity.
Is CVE-2013-6693 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-6693?: CVE-2013-6693 primarily affects Cisco Ios. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-6693?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-6693 published?: CVE-2013-6693 was published on 2013-11-22 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.3\(2\)s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.3s:*:*:*:*:*:*:*
cpe:2.3:h:cisco:7600_router:*:*:*:*:*:*:*:*

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