CVE-2011-0946 — The NAT implementation in Cisco IOS 12.1 through 12.4 and 15.0 through 15.1, and IOS XE 3.1.xSG, allows remote attackers to cause a denial of service (device reload or hang) via malformed NetMeeting Directory (aka Internet Locator Service or ILS) LDAP traffic, aka Bug ID CSCtd10712

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HIGH

The NAT implementation in Cisco IOS 12.1 through 12.4 and 15.0 through 15.1, and IOS XE 3.1.xSG, allows remote attackers to cause a denial of service (device reload or hang) via malformed NetMeeting Directory (aka Internet Locator Service or ILS) LDAP traffic, aka Bug ID CSCtd10712

Published Oct 3, 2011

7.8

HIGH

CVSS 2.0

EPSS 1.79%

Description

The NAT implementation in Cisco IOS 12.1 through 12.4 and 15.0 through 15.1, and IOS XE 3.1.xSG, allows remote attackers to cause a denial of service (device reload or hang) via malformed NetMeeting Directory (aka Internet Locator Service or ILS) LDAP traffic, aka Bug ID CSCtd10712.

Affected products

Remediation

No remediation recorded yet.

Metrics

1.79% 0.01787

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.01787

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 (12 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	1.79% (0.01787)	77.53th	v5 (v2026.06.15)
Jun 15, 2026	1.79% (0.01787)	75.39th	v5 (v2026.06.15)
Mar 17, 2025	0.84% (0.00844)	73.15th	v4 (v2025.03.14)
Dec 12, 2024	0.18% (0.00181)	56.68th	v3 (v2023.03.01)
Apr 25, 2024	0.15% (0.00155)	51.19th	v3 (v2023.03.01)
Mar 15, 2024	0.14% (0.00143)	49.02th	v3 (v2023.03.01)
Feb 8, 2024	0.13% (0.00129)	46.50th	v3 (v2023.03.01)
Mar 7, 2023	0.18% (0.00181)	53.55th	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 (0)

No CWE recorded.

References (2)

http://tools.cisco.com/security/center/viewAlert.x?alertId=24117
x_refsource_CONFIRMVendor Advisory
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b95d4d.shtml
vendor-advisoryx_refsource_CISCOVendor Advisory

Link	Providers	Tags
http://tools.cisco.com/security/center/viewAlert.x?alertId=24117		x_refsource_CONFIRMVendor Advisory
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b95d4d.shtml		vendor-advisoryx_refsource_CISCOVendor Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner cisco

Published Oct 3, 2011

Updated Sep 16, 2024

Reserved Feb 10, 2011

Link CVE-2011-0946

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2011-0946

Red Hat

Severity n/a

Public date n/a

Links CVE-2011-0946