How severe is CVE-2013-6704?

CVE-2013-6704 has a CVSS 2.0 base score of 7.1, rated high severity.

Is CVE-2013-6704 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-6704?

CVE-2013-6704 affects Cisco Ios Xe. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2013-6704?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2013-6704 published?

CVE-2013-6704 was published on 2013-12-03 and last updated on 2026-06-17.

CVE-2013-6704

CVE-2013-6704 is a high-severity vulnerability in Cisco Ios Xe with a CVSS 2.0 base score of 7.1. 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-399.

Key facts

Severity: High (CVSS 2.0 base score 7.1)
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Cisco Ios Xe
Published: 2013-12-03
Last modified: 2026-06-17

Description

Cisco IOS XE does not properly manage memory for TFTP UDP flows, which allows remote attackers to cause a denial of service (memory consumption) via TFTP (1) client or (2) server traffic, aka Bug IDs CSCuh09324 and CSCty42686.

Frequently asked questions

What is CVE-2013-6704?: Cisco IOS XE does not properly manage memory for TFTP UDP flows, which allows remote attackers to cause a denial of service (memory consumption) via TFTP (1) client or (2) server traffic, aka Bug IDs CSCuh09324 and CSCty42686.
How severe is CVE-2013-6704?: CVE-2013-6704 has a CVSS 2.0 base score of 7.1, rated high severity.
Is CVE-2013-6704 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-6704?: CVE-2013-6704 affects Cisco Ios Xe. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2013-6704?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2013-6704 published?: CVE-2013-6704 was published on 2013-12-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:cisco:ios_xe:-:*:*:*:*:*:*:*

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