CVE-2012-4638 — Cisco IOS before 15.1(1)SY allows local users to cause a denial of service (device reload) by establishing an outbound SSH session, aka Bug ID CSCto00318

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MEDIUM

Cisco IOS before 15.1(1)SY allows local users to cause a denial of service (device reload) by establishing an outbound SSH session, aka Bug ID CSCto00318

Published Apr 23, 2014

4.9

MEDIUM

CVSS 2.0

EPSS 0.30%

Description

Cisco IOS before 15.1(1)SY allows local users to cause a denial of service (device reload) by establishing an outbound SSH session, aka Bug ID CSCto00318.

Affected products

Remediation

No remediation recorded yet.

Metrics

0.30% 0.00296

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

EPSS probability 0.00296

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	0.30% (0.00296)	20.10th	v5 (v2026.06.15)
Jun 15, 2026	0.29% (0.00293)	20.77th	v5 (v2026.06.15)
Mar 17, 2025	0.09% (0.00090)	23.44th	v4 (v2025.03.14)
Dec 12, 2024	0.05% (0.00049)	20.13th	v3 (v2023.03.01)
Jun 4, 2024	0.04% (0.00044)	10.11th	v3 (v2023.03.01)
Oct 18, 2023	0.04% (0.00043)	8.10th	v3 (v2023.03.01)
Mar 7, 2023	0.04% (0.00042)	5.63th	v3 (v2023.03.01)
Mar 6, 2023	0.89% (0.00885)	27.89th	v2 (v2022.01.01)
Sep 10, 2022	0.89% (0.00885)	26.24th	v2 (v2022.01.01)
Apr 1, 2022	0.89% (0.00885)	24.24th	v2 (v2022.01.01)
Feb 4, 2022	0.89% (0.00885)	10.50th	v2 (v2022.01.01)

Weaknesses (0)

No CWE recorded.

References (1)

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/15-1SY/release_notes.pdf
x_refsource_CONFIRM

Link	Providers	Tags
http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/15-1SY/release_notes.pdf		x_refsource_CONFIRM

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner cisco

Published Apr 23, 2014

Updated Aug 6, 2024

Reserved Aug 24, 2012

Link CVE-2012-4638

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2012-4638

Red Hat

Severity n/a

Public date n/a

Links CVE-2012-4638