Every CVE Search/ Get API key

CVE-2006-5051

Signal handler race condition in OpenSSH before 4.4 allows remote attackers to cause a denial of...

8.1 HighPublic exploitFix available

Signal handler race condition in OpenSSH before 4.4 allows remote attackers to cause a denial of service (crash), and possibly execute arbitrary code if GSSAPI authentication is enabled, via unspecified vectors that lead to a double-free.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

45.6%Up 37.4 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 8.1

Signal handler race condition in OpenSSH before 4.4 allows remote attackers to cause a denial of service (crash), and possibly execute arbitrary code if GSSAPI authentication is enabled, via unspecified vectors that lead to a double-free.

Record
CVE-2006-5051
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
9.3 HighAV:N/AC:M/Au:N/C:C/I:C/A:C
Weakness
CWE-415
Updated
2026-11-02
CVE List No score

Signal handler race condition in OpenSSH before 4.4 allows remote attackers to cause a denial of service (crash), and possibly execute arbitrary code if GSSAPI authentication is enabled, via unspecified vectors that lead to a double-free.

Record
CVE-2006-5051
Updated
2026-11-02
EUVDEUVD-2006-5036 No score

Signal handler race condition in OpenSSH before 4.4 allows remote attackers to cause a denial of service (crash), and possibly execute arbitrary code if GSSAPI authentication is enabled, via unspecified vectors that lead to a double-free.

Record
EUVD-2006-5036
Updated
2026-11-03
GitHub AdvisoriesGHSA-mq5h-r3rg-j9hg No score

Signal handler race condition in OpenSSH before 4.4 allows remote attackers to cause a denial of...

Signal handler race condition in OpenSSH before 4.4 allows remote attackers to cause a denial of service (crash), and possibly execute arbitrary code if GSSAPI authentication is enabled, via unspecified vectors that lead to a double-free.

Record
GHSA-mq5h-r3rg-j9hg
Weakness
CWE-362
Updated
2026-11-02
OSV 8.1

Signal handler race condition in OpenSSH before 4.4 allows remote attackers to cause a denial of service (crash), and possibly execute arbitrary code if GSSAPI authentication is enabled, via unspecified vectors that lead to a double-free.

Record
CVE-2006-5051
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2006-5051 8.1

Signal handler race condition in OpenSSH before 4.4 allows remote attackers to cause a denial of service (crash), and possibly execute arbitrary code if GSSAPI authentication is enabled, via unspecified vectors that lead to a double-free.

Record
DEBIAN-CVE-2006-5051
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
openssh
Debian:12
 before 1:4.6p1-1
1:4.6p1-1
openssh
Debian:13
 before 1:4.6p1-1
1:4.6p1-1
openssh
Debian:14
 before 1:4.6p1-1
1:4.6p1-1
openssh-krb5
Debian:3.1
From an advisory covering 2 CVEs
 before 3.8.1p1-7sarge1, plus listed versions
3.8.1p1-7
3.8.1p1-7sarge1
openssh
Debian:3.1
From an advisory covering 2 CVEs
 before 1:3.8.1p1-8.sarge.6, plus listed versions
1:3.8.1p1-8.sarge.4
1:3.8.1p1-8.sarge.6
openssh
Debian:4.0
From an advisory covering 2 CVEs
 before 1:4.3p2-9etch3, plus listed versions
1:4.3p2-91:4.3p2-9etch11:4.3p2-9etch21:4.3p2-9etch2+m68k1
1:4.3p2-9etch3
openssh
Red Hat:enterprise_linux:3::as
From an advisory covering 2 CVEs
 before 0:3.6.1p2-33.30.12
0:3.6.1p2-33.30.12
openssh-askpass
Red Hat:enterprise_linux:3::as
From an advisory covering 2 CVEs
 before 0:3.6.1p2-33.30.12
0:3.6.1p2-33.30.12
openssh-askpass-gnome
Red Hat:enterprise_linux:3::as
From an advisory covering 2 CVEs
 before 0:3.6.1p2-33.30.12
0:3.6.1p2-33.30.12
openssh-clients
Red Hat:enterprise_linux:3::as
From an advisory covering 2 CVEs
 before 0:3.6.1p2-33.30.12
0:3.6.1p2-33.30.12
Show 64 moreShow less
Affected packages
PackageAffectedFixed
openssh-debuginfo
Red Hat:enterprise_linux:3::as
From an advisory covering 2 CVEs
 before 0:3.6.1p2-33.30.12
0:3.6.1p2-33.30.12
openssh-server
Red Hat:enterprise_linux:3::as
From an advisory covering 2 CVEs
 before 0:3.6.1p2-33.30.12
0:3.6.1p2-33.30.12
openssh
Red Hat:enterprise_linux:3::desktop
From an advisory covering 2 CVEs
 before 0:3.6.1p2-33.30.12
0:3.6.1p2-33.30.12
openssh-askpass
Red Hat:enterprise_linux:3::desktop
From an advisory covering 2 CVEs
 before 0:3.6.1p2-33.30.12
0:3.6.1p2-33.30.12
openssh-askpass-gnome
Red Hat:enterprise_linux:3::desktop
From an advisory covering 2 CVEs
 before 0:3.6.1p2-33.30.12
0:3.6.1p2-33.30.12
openssh-clients
Red Hat:enterprise_linux:3::desktop
From an advisory covering 2 CVEs
 before 0:3.6.1p2-33.30.12
0:3.6.1p2-33.30.12
openssh-debuginfo
Red Hat:enterprise_linux:3::desktop
From an advisory covering 2 CVEs
 before 0:3.6.1p2-33.30.12
0:3.6.1p2-33.30.12
openssh-server
Red Hat:enterprise_linux:3::desktop
From an advisory covering 2 CVEs
 before 0:3.6.1p2-33.30.12
0:3.6.1p2-33.30.12
openssh
Red Hat:enterprise_linux:3::es
From an advisory covering 2 CVEs
 before 0:3.6.1p2-33.30.12
0:3.6.1p2-33.30.12
openssh-askpass
Red Hat:enterprise_linux:3::es
From an advisory covering 2 CVEs
 before 0:3.6.1p2-33.30.12
0:3.6.1p2-33.30.12
openssh-askpass-gnome
Red Hat:enterprise_linux:3::es
From an advisory covering 2 CVEs
 before 0:3.6.1p2-33.30.12
0:3.6.1p2-33.30.12
openssh-clients
Red Hat:enterprise_linux:3::es
From an advisory covering 2 CVEs
 before 0:3.6.1p2-33.30.12
0:3.6.1p2-33.30.12
openssh-debuginfo
Red Hat:enterprise_linux:3::es
From an advisory covering 2 CVEs
 before 0:3.6.1p2-33.30.12
0:3.6.1p2-33.30.12
openssh-server
Red Hat:enterprise_linux:3::es
From an advisory covering 2 CVEs
 before 0:3.6.1p2-33.30.12
0:3.6.1p2-33.30.12
openssh
Red Hat:enterprise_linux:3::ws
From an advisory covering 2 CVEs
 before 0:3.6.1p2-33.30.12
0:3.6.1p2-33.30.12
openssh-askpass
Red Hat:enterprise_linux:3::ws
From an advisory covering 2 CVEs
 before 0:3.6.1p2-33.30.12
0:3.6.1p2-33.30.12
openssh-askpass-gnome
Red Hat:enterprise_linux:3::ws
From an advisory covering 2 CVEs
 before 0:3.6.1p2-33.30.12
0:3.6.1p2-33.30.12
openssh-clients
Red Hat:enterprise_linux:3::ws
From an advisory covering 2 CVEs
 before 0:3.6.1p2-33.30.12
0:3.6.1p2-33.30.12
openssh-debuginfo
Red Hat:enterprise_linux:3::ws
From an advisory covering 2 CVEs
 before 0:3.6.1p2-33.30.12
0:3.6.1p2-33.30.12
openssh-server
Red Hat:enterprise_linux:3::ws
From an advisory covering 2 CVEs
 before 0:3.6.1p2-33.30.12
0:3.6.1p2-33.30.12
openssh
Red Hat:enterprise_linux:4::as
From an advisory covering 2 CVEs
 before 0:3.9p1-8.RHEL4.17
0:3.9p1-8.RHEL4.17
openssh-askpass
Red Hat:enterprise_linux:4::as
From an advisory covering 2 CVEs
 before 0:3.9p1-8.RHEL4.17
0:3.9p1-8.RHEL4.17
openssh-askpass-gnome
Red Hat:enterprise_linux:4::as
From an advisory covering 2 CVEs
 before 0:3.9p1-8.RHEL4.17
0:3.9p1-8.RHEL4.17
openssh-clients
Red Hat:enterprise_linux:4::as
From an advisory covering 2 CVEs
 before 0:3.9p1-8.RHEL4.17
0:3.9p1-8.RHEL4.17
openssh-debuginfo
Red Hat:enterprise_linux:4::as
From an advisory covering 2 CVEs
 before 0:3.9p1-8.RHEL4.17
0:3.9p1-8.RHEL4.17
openssh-server
Red Hat:enterprise_linux:4::as
From an advisory covering 2 CVEs
 before 0:3.9p1-8.RHEL4.17
0:3.9p1-8.RHEL4.17
openssh
Red Hat:enterprise_linux:4::desktop
From an advisory covering 2 CVEs
 before 0:3.9p1-8.RHEL4.17
0:3.9p1-8.RHEL4.17
openssh-askpass
Red Hat:enterprise_linux:4::desktop
From an advisory covering 2 CVEs
 before 0:3.9p1-8.RHEL4.17
0:3.9p1-8.RHEL4.17
openssh-askpass-gnome
Red Hat:enterprise_linux:4::desktop
From an advisory covering 2 CVEs
 before 0:3.9p1-8.RHEL4.17
0:3.9p1-8.RHEL4.17
openssh-clients
Red Hat:enterprise_linux:4::desktop
From an advisory covering 2 CVEs
 before 0:3.9p1-8.RHEL4.17
0:3.9p1-8.RHEL4.17
openssh-debuginfo
Red Hat:enterprise_linux:4::desktop
From an advisory covering 2 CVEs
 before 0:3.9p1-8.RHEL4.17
0:3.9p1-8.RHEL4.17
openssh-server
Red Hat:enterprise_linux:4::desktop
From an advisory covering 2 CVEs
 before 0:3.9p1-8.RHEL4.17
0:3.9p1-8.RHEL4.17
openssh
Red Hat:enterprise_linux:4::es
From an advisory covering 2 CVEs
 before 0:3.9p1-8.RHEL4.17
0:3.9p1-8.RHEL4.17
openssh-askpass
Red Hat:enterprise_linux:4::es
From an advisory covering 2 CVEs
 before 0:3.9p1-8.RHEL4.17
0:3.9p1-8.RHEL4.17
openssh-askpass-gnome
Red Hat:enterprise_linux:4::es
From an advisory covering 2 CVEs
 before 0:3.9p1-8.RHEL4.17
0:3.9p1-8.RHEL4.17
openssh-clients
Red Hat:enterprise_linux:4::es
From an advisory covering 2 CVEs
 before 0:3.9p1-8.RHEL4.17
0:3.9p1-8.RHEL4.17
openssh-debuginfo
Red Hat:enterprise_linux:4::es
From an advisory covering 2 CVEs
 before 0:3.9p1-8.RHEL4.17
0:3.9p1-8.RHEL4.17
openssh-server
Red Hat:enterprise_linux:4::es
From an advisory covering 2 CVEs
 before 0:3.9p1-8.RHEL4.17
0:3.9p1-8.RHEL4.17
openssh
Red Hat:enterprise_linux:4::ws
From an advisory covering 2 CVEs
 before 0:3.9p1-8.RHEL4.17
0:3.9p1-8.RHEL4.17
openssh-askpass
Red Hat:enterprise_linux:4::ws
From an advisory covering 2 CVEs
 before 0:3.9p1-8.RHEL4.17
0:3.9p1-8.RHEL4.17
openssh-askpass-gnome
Red Hat:enterprise_linux:4::ws
From an advisory covering 2 CVEs
 before 0:3.9p1-8.RHEL4.17
0:3.9p1-8.RHEL4.17
openssh-clients
Red Hat:enterprise_linux:4::ws
From an advisory covering 2 CVEs
 before 0:3.9p1-8.RHEL4.17
0:3.9p1-8.RHEL4.17
openssh-debuginfo
Red Hat:enterprise_linux:4::ws
From an advisory covering 2 CVEs
 before 0:3.9p1-8.RHEL4.17
0:3.9p1-8.RHEL4.17
openssh-server
Red Hat:enterprise_linux:4::ws
From an advisory covering 2 CVEs
 before 0:3.9p1-8.RHEL4.17
0:3.9p1-8.RHEL4.17
openssh
Red Hat:enterprise_linux:2.1::as
From an advisory covering 4 CVEs
 before 0:3.1p1-21
0:3.1p1-21
openssh-askpass
Red Hat:enterprise_linux:2.1::as
From an advisory covering 4 CVEs
 before 0:3.1p1-21
0:3.1p1-21
openssh-askpass-gnome
Red Hat:enterprise_linux:2.1::as
From an advisory covering 4 CVEs
 before 0:3.1p1-21
0:3.1p1-21
openssh-clients
Red Hat:enterprise_linux:2.1::as
From an advisory covering 4 CVEs
 before 0:3.1p1-21
0:3.1p1-21
openssh-server
Red Hat:enterprise_linux:2.1::as
From an advisory covering 4 CVEs
 before 0:3.1p1-21
0:3.1p1-21
openssh
Red Hat:enterprise_linux:2.1::aw
From an advisory covering 4 CVEs
 before 0:3.1p1-21
0:3.1p1-21
openssh-askpass
Red Hat:enterprise_linux:2.1::aw
From an advisory covering 4 CVEs
 before 0:3.1p1-21
0:3.1p1-21
openssh-askpass-gnome
Red Hat:enterprise_linux:2.1::aw
From an advisory covering 4 CVEs
 before 0:3.1p1-21
0:3.1p1-21
openssh-clients
Red Hat:enterprise_linux:2.1::aw
From an advisory covering 4 CVEs
 before 0:3.1p1-21
0:3.1p1-21
openssh-server
Red Hat:enterprise_linux:2.1::aw
From an advisory covering 4 CVEs
 before 0:3.1p1-21
0:3.1p1-21
openssh
Red Hat:enterprise_linux:2.1::es
From an advisory covering 4 CVEs
 before 0:3.1p1-21
0:3.1p1-21
openssh-askpass
Red Hat:enterprise_linux:2.1::es
From an advisory covering 4 CVEs
 before 0:3.1p1-21
0:3.1p1-21
openssh-askpass-gnome
Red Hat:enterprise_linux:2.1::es
From an advisory covering 4 CVEs
 before 0:3.1p1-21
0:3.1p1-21
openssh-clients
Red Hat:enterprise_linux:2.1::es
From an advisory covering 4 CVEs
 before 0:3.1p1-21
0:3.1p1-21
openssh-server
Red Hat:enterprise_linux:2.1::es
From an advisory covering 4 CVEs
 before 0:3.1p1-21
0:3.1p1-21
openssh
Red Hat:enterprise_linux:2.1::ws
From an advisory covering 4 CVEs
 before 0:3.1p1-21
0:3.1p1-21
openssh-askpass
Red Hat:enterprise_linux:2.1::ws
From an advisory covering 4 CVEs
 before 0:3.1p1-21
0:3.1p1-21
openssh-askpass-gnome
Red Hat:enterprise_linux:2.1::ws
From an advisory covering 4 CVEs
 before 0:3.1p1-21
0:3.1p1-21
openssh-clients
Red Hat:enterprise_linux:2.1::ws
From an advisory covering 4 CVEs
 before 0:3.1p1-21
0:3.1p1-21
openssh-server
Red Hat:enterprise_linux:2.1::ws
From an advisory covering 4 CVEs
 before 0:3.1p1-21
0:3.1p1-21

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
PoC in GitHubbigb0x/CVE-2024-63872024-07-01
PoC in GitHubsardine-web/CVE-2024-6387_Check2024-07-04
PoC in GitHubanhvutuan/CVE-2024-6387-poc-12024-10-22

History

History
RecordedChangedSources
affected, exploits, facts
affected
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2006-5051 is a high vulnerability (CVSS 8.1) in Openbsd Openssh, published September 27, 2006. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 45.6%, the 98th percentile. Fixed in openssh 1:4.6p1-1.

References

Show 77 moreShow less
Pages All vulnerabilities Browse Docs Sources Guide Get API key
MoveEnter Open