CVE-2006-1206 — Matt Johnston Dropbear SSH server 0.47 and earlier, as used in embedded Linux devices and on general-purpose operating systems, allows remote attackers to cause a denial of service (connection slot exhaustion) via a large number of connection attempts that exceeds the MAX_UNAUTH_CLIENTS defined value of 30

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MEDIUM

Matt Johnston Dropbear SSH server 0.47 and earlier, as used in embedded Linux devices and on general-purpose operating systems, allows remote attackers to cause a denial of service (connection slot exhaustion) via a large number of connection attempts that exceeds the MAX_UNAUTH_CLIENTS defined value of 30

Published Mar 14, 2006

5.0

MEDIUM

CVSS 2.0

EPSS 11.67%

Description

Matt Johnston Dropbear SSH server 0.47 and earlier, as used in embedded Linux devices and on general-purpose operating systems, allows remote attackers to cause a denial of service (connection slot exhaustion) via a large number of connection attempts that exceeds the MAX_UNAUTH_CLIENTS defined value of 30.

Affected products

Remediation

No remediation recorded yet.

Metrics

11.67% 0.11671

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.

EPSS probability 0.11671

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 (13 key points)

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

Date	Score	Percentile	Model
Oct 2, 2026	11.67% (0.11671)	95.94th	v5 (v2026.06.15)
Jun 15, 2026	11.67% (0.11671)	95.50th	v5 (v2026.06.15)
Nov 24, 2025	12.23% (0.12227)	93.57th	v4 (v2025.03.14)
Jul 25, 2025	7.02% (0.07017)	91.03th	v4 (v2025.03.14)
Mar 30, 2025	5.78% (0.05776)	89.55th	v4 (v2025.03.14)
Mar 29, 2025	7.96% (0.07960)	86.52th	v4 (v2025.03.14)
Mar 17, 2025	6.70% (0.06704)	90.55th	v4 (v2025.03.14)
Dec 17, 2024	1.55% (0.01551)	86.82th	v3 (v2023.03.01)
Dec 12, 2024	2.73% (0.02725)	90.89th	v3 (v2023.03.01)
Mar 7, 2023	2.73% (0.02725)	88.86th	v3 (v2023.03.01)
Mar 6, 2023	4.19% (0.04187)	87.39th	v2 (v2022.01.01)
Apr 1, 2022	4.19% (0.04187)	86.11th	v2 (v2022.01.01)
Feb 4, 2022	4.19% (0.04187)	69.86th	v2 (v2022.01.01)

Weaknesses (0)

No CWE recorded.

References (4)

http://securitytracker.com/id?1015742
vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
http://www.securityfocus.com/archive/1/426999/100/0/threaded
mailing-listx_refsource_BUGTRAQ
http://www.securityfocus.com/bid/17024
vdb-entryx_refsource_BIDPatchThird Party AdvisoryVDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/25075
vdb-entryx_refsource_XFVDB Entry

Link	Providers	Tags
http://securitytracker.com/id?1015742		vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
http://www.securityfocus.com/archive/1/426999/100/0/threaded		mailing-listx_refsource_BUGTRAQ
http://www.securityfocus.com/bid/17024		vdb-entryx_refsource_BIDPatchThird Party AdvisoryVDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/25075		vdb-entryx_refsource_XFVDB Entry

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Mar 14, 2006

Updated Aug 7, 2024

Reserved Mar 14, 2006

Link CVE-2006-1206

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2006-1206

Red Hat

Severity n/a

Public date n/a

Links CVE-2006-1206