How severe is CVE-2013-1142?

CVE-2013-1142 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2013-1142 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-1142?

CVE-2013-1142 affects Cisco Ios. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2013-1142?

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-2013-1142 published?

CVE-2013-1142 was published on 2013-03-28 and last updated on 2026-06-16.

CVE-2013-1142

CVE-2013-1142 is a high-severity vulnerability in Cisco Ios with a CVSS 2.0 base score of 7.8. 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-362.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-362
Affected product: Cisco Ios
Published: 2013-03-28
Last modified: 2026-06-16

Description

Race condition in the VRF-aware NAT feature in Cisco IOS 12.2 through 12.4 and 15.0 through 15.2 allows remote attackers to cause a denial of service (memory consumption) via IPv4 packets, aka Bug IDs CSCtg47129 and CSCtz96745.

Frequently asked questions

What is CVE-2013-1142?: Race condition in the VRF-aware NAT feature in Cisco IOS 12.2 through 12.4 and 15.0 through 15.2 allows remote attackers to cause a denial of service (memory consumption) via IPv4 packets, aka Bug IDs CSCtg47129 and CSCtz96745.
How severe is CVE-2013-1142?: CVE-2013-1142 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2013-1142 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-1142?: CVE-2013-1142 affects Cisco Ios. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2013-1142?: 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-2013-1142 published?: CVE-2013-1142 was published on 2013-03-28 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*

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