CVE-2011-2586 — The HTTP client in Cisco IOS 12.4 and 15.0 allows user-assisted remote attackers to cause a denial of service (device crash) via a malformed HTTP response to a request for service installation, aka Bug ID CSCts12249

Back Back to CVE browser

MEDIUM

The HTTP client in Cisco IOS 12.4 and 15.0 allows user-assisted remote attackers to cause a denial of service (device crash) via a malformed HTTP response to a request for service installation, aka Bug ID CSCts12249

Published May 2, 2012

5.4

MEDIUM

CVSS 2.0

EPSS 1.19%

Description

The HTTP client in Cisco IOS 12.4 and 15.0 allows user-assisted remote attackers to cause a denial of service (device crash) via a malformed HTTP response to a request for service installation, aka Bug ID CSCts12249.

Affected products

Remediation

No remediation recorded yet.

Metrics

1.19% 0.01189

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

EPSS probability 0.01189

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 (11 key points)

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

Date	Score	Percentile	Model
Oct 1, 2026	1.19% (0.01189)	66.81th	v5 (v2026.06.15)
Jun 15, 2026	1.20% (0.01203)	64.13th	v5 (v2026.06.15)
Mar 17, 2025	0.43% (0.00427)	60.26th	v4 (v2025.03.14)
Dec 12, 2024	0.18% (0.00181)	56.68th	v3 (v2023.03.01)
Jul 10, 2024	0.18% (0.00181)	55.67th	v3 (v2023.03.01)
Mar 23, 2023	0.18% (0.00181)	53.64th	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-20

Improper Input Validation

References (2)

http://tools.cisco.com/security/center/viewAlert.x?alertId=24436
x_refsource_CONFIRMVendor Advisory
http://www.securitytracker.com/id?1027005
vdb-entryx_refsource_SECTRACK

Link	Providers	Tags
http://tools.cisco.com/security/center/viewAlert.x?alertId=24436		x_refsource_CONFIRMVendor Advisory
http://www.securitytracker.com/id?1027005		vdb-entryx_refsource_SECTRACK

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner cisco

Published May 2, 2012

Updated Aug 6, 2024

Reserved Jun 27, 2011

Link CVE-2011-2586

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2011-2586

Red Hat

Severity n/a

Public date n/a

Links CVE-2011-2586