CVE-2002-0083

Exp

Off-by-one error in the channel code of OpenSSH 2.0 through 3.0.2 allows local users or remote malicious servers to gain privileges.

Published: 2002-03-15 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2002-0083 is rated High Exploit Risk (83.4/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.77%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2002-0083

EDB-ID Source Kind Published Link
21314 exploit_db edb 2002-03-07 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2002-0083

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-03 1.53% 1.77% +0.24%
2 2026-03-25 1.57% 1.53% -0.04%
3 2026-03-21 — 1.57% —

Full EPSS history (24 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2002-0083

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2002-0083

OS Trackers for CVE-2002-0083

vendor priority summary link
redhat — — https://access.redhat.com/security/cve/CVE-2002-0083

Affected software / configurations for CVE-2002-0083

Vendor Product Version Raw CPE
immunix immunix 7.0 cpe:2.3:a:immunix:immunix:7.0:*:*:*:*:*:*:*
mandrakesoft mandrake_single_network_firewall 7.2 cpe:2.3:a:mandrakesoft:mandrake_single_network_firewall:7.2:*:*:*:*:*:*:*
openbsd openssh >= 2.0, < 3.1 cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*
openpkg openpkg 1.0 cpe:2.3:a:openpkg:openpkg:1.0:*:*:*:*:*:*:*
conectiva linux 5.0 cpe:2.3:o:conectiva:linux:5.0:*:*:*:*:*:*:*
conectiva linux 5.1 cpe:2.3:o:conectiva:linux:5.1:*:*:*:*:*:*:*
conectiva linux 6.0 cpe:2.3:o:conectiva:linux:6.0:*:*:*:*:*:*:*
conectiva linux 7.0 cpe:2.3:o:conectiva:linux:7.0:*:*:*:*:*:*:*
conectiva linux ecommerce cpe:2.3:o:conectiva:linux:ecommerce:*:*:*:*:*:*:*
conectiva linux graficas cpe:2.3:o:conectiva:linux:graficas:*:*:*:*:*:*:*
engardelinux secure_linux 1.0.1 cpe:2.3:o:engardelinux:secure_linux:1.0.1:*:*:*:*:*:*:*
mandrakesoft mandrake_linux 7.1 cpe:2.3:o:mandrakesoft:mandrake_linux:7.1:*:*:*:*:*:*:*
mandrakesoft mandrake_linux 7.2 cpe:2.3:o:mandrakesoft:mandrake_linux:7.2:*:*:*:*:*:*:*
mandrakesoft mandrake_linux 8.0 cpe:2.3:o:mandrakesoft:mandrake_linux:8.0:*:*:*:*:*:*:*
mandrakesoft mandrake_linux 8.0 cpe:2.3:o:mandrakesoft:mandrake_linux:8.0:*:ppc:*:*:*:*:*
mandrakesoft mandrake_linux 8.1 cpe:2.3:o:mandrakesoft:mandrake_linux:8.1:*:*:*:*:*:*:*
mandrakesoft mandrake_linux_corporate_server 1.0.1 cpe:2.3:o:mandrakesoft:mandrake_linux_corporate_server:1.0.1:*:*:*:*:*:*:*
redhat linux 7.0 cpe:2.3:o:redhat:linux:7.0:*:*:*:*:*:*:*
redhat linux 7.1 cpe:2.3:o:redhat:linux:7.1:*:*:*:*:*:*:*
redhat linux 7.2 cpe:2.3:o:redhat:linux:7.2:*:*:*:*:*:*:*
suse suse_linux 6.4 cpe:2.3:o:suse:suse_linux:6.4:*:i386:*:*:*:*:*
suse suse_linux 6.4 cpe:2.3:o:suse:suse_linux:6.4:*:ppc:*:*:*:*:*
suse suse_linux 6.4 cpe:2.3:o:suse:suse_linux:6.4:alpha:*:*:*:*:*:*
suse suse_linux 7.0 cpe:2.3:o:suse:suse_linux:7.0:*:i386:*:*:*:*:*
suse suse_linux 7.0 cpe:2.3:o:suse:suse_linux:7.0:*:ppc:*:*:*:*:*
suse suse_linux 7.0 cpe:2.3:o:suse:suse_linux:7.0:*:sparc:*:*:*:*:*
suse suse_linux 7.0 cpe:2.3:o:suse:suse_linux:7.0:alpha:*:*:*:*:*:*
suse suse_linux 7.1 cpe:2.3:o:suse:suse_linux:7.1:*:spa:*:*:*:*:*
suse suse_linux 7.1 cpe:2.3:o:suse:suse_linux:7.1:*:sparc:*:*:*:*:*
suse suse_linux 7.1 cpe:2.3:o:suse:suse_linux:7.1:*:x86:*:*:*:*:*
suse suse_linux 7.1 cpe:2.3:o:suse:suse_linux:7.1:alpha:*:*:*:*:*:*
suse suse_linux 7.2 cpe:2.3:o:suse:suse_linux:7.2:*:i386:*:*:*:*:*
suse suse_linux 7.3 cpe:2.3:o:suse:suse_linux:7.3:*:i386:*:*:*:*:*
suse suse_linux 7.3 cpe:2.3:o:suse:suse_linux:7.3:*:ppc:*:*:*:*:*
suse suse_linux 7.3 cpe:2.3:o:suse:suse_linux:7.3:*:sparc:*:*:*:*:*
trustix secure_linux 1.1 cpe:2.3:o:trustix:secure_linux:1.1:*:*:*:*:*:*:*
trustix secure_linux 1.2 cpe:2.3:o:trustix:secure_linux:1.2:*:*:*:*:*:*:*
trustix secure_linux 1.5 cpe:2.3:o:trustix:secure_linux:1.5:*:*:*:*:*:*:*

References for CVE-2002-0083

URL Tags
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-02:13.openssh.asc Broken Link
ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2002-004.txt.asc Broken Link
ftp://stage.caldera.com/pub/security/openserver/CSSA-2002-SCO.10/CSSA-2002-SCO.10.txt Broken Link
ftp://stage.caldera.com/pub/security/openunix/CSSA-2002-SCO.11/CSSA-2002-SCO.11.txt Broken Link
http://archives.neohapsis.com/archives/bugtraq/2002-03/0108.html Broken Link
http://archives.neohapsis.com/archives/vulnwatch/2002-q1/0060.html Broken Link
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000467 Broken Link
http://marc.info/?l=bugtraq&m=101552065005254&w=2 Mailing List
http://marc.info/?l=bugtraq&m=101553908201861&w=2 Mailing List
http://marc.info/?l=bugtraq&m=101561384821761&w=2 Mailing List
http://marc.info/?l=bugtraq&m=101586991827622&w=2 Mailing List Patch
http://online.securityfocus.com/advisories/3960 Broken Link Third Party Advisory VDB Entry
http://online.securityfocus.com/archive/1/264657 Broken Link Third Party Advisory VDB Entry
http://www.calderasystems.com/support/security/advisories/CSSA-2002-012.0.txt Broken Link
http://www.debian.org/security/2002/dsa-119 Broken Link Vendor Advisory
http://www.iss.net/security_center/static/8383.php Broken Link
http://www.linux-mandrake.com/en/security/2002/MDKSA-2002-019.php Broken Link
http://www.linuxsecurity.com/advisories/other_advisory-1937.html Broken Link Patch Vendor Advisory
http://www.novell.com/linux/security/advisories/2002_009_openssh_txt.html Broken Link
http://www.openbsd.org/advisories/ssh_channelalloc.txt Vendor Advisory
http://www.osvdb.org/730 Broken Link
http://www.redhat.com/support/errata/RHSA-2002-043.html Broken Link
http://www.securityfocus.com/bid/4241 Broken Link Third Party Advisory VDB Entry
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