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

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HIGH

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

Published Mar 28, 2013

7.8

HIGH

CVSS 2.0

EPSS 1.06%

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.

Affected products

Remediation

No remediation recorded yet.

Metrics

1.06% 0.01057

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

EPSS probability 0.01057

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	1.06% (0.01057)	63.27th	v5 (v2026.06.15)
Jun 15, 2026	1.06% (0.01057)	59.91th	v5 (v2026.06.15)
Mar 17, 2025	0.29% (0.00288)	50.15th	v4 (v2025.03.14)
Dec 12, 2024	0.18% (0.00181)	56.68th	v3 (v2023.03.01)
Feb 16, 2024	0.18% (0.00181)	54.34th	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-362

Race Condition

References (2)

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130327-nat
vendor-advisoryx_refsource_CISCOVendor Advisory
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-1142
vendor-advisoryx_refsource_CISCOVendor Advisory

Link	Providers	Tags
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130327-nat		vendor-advisoryx_refsource_CISCOVendor Advisory
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-1142		vendor-advisoryx_refsource_CISCOVendor Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner cisco

Published Mar 28, 2013

Updated Aug 6, 2024

Reserved Jan 11, 2013

Link CVE-2013-1142

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2013-1142

Red Hat

Severity n/a

Public date n/a

Links CVE-2013-1142