CVE-2002-0083
Off-by-one error in the channel code of OpenSSH 2.0 through 3.0.2 allows local users or remote...
CVE-2002-0083 is a critical vulnerability (CVSS 9.8) in Openbsd Openssh, published March 15, 2002. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 14.7%, the 96th percentile. No source names a fixed version.
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2002-0083- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 10.0 High
AV:N/AC:L/Au:N/C:C/I:C/A:C - Weakness
- CWE-193
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2002-0083- Updated
- 2026-11-02
EUVDEUVD-2002-0083 No score
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.
- Record
EUVD-2002-0083- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-w9fg-77jf-ghf9 No score
Off-by-one error in the channel code of OpenSSH 2.0 through 3.0.2 allows local users or remote...
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.
- Record
GHSA-w9fg-77jf-ghf9- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | OpenSSH 2.x/3.0.1/3.0.2 - Channel Code Off-by-One | 2002-03-07 |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, Exploit-DB, GitHub Advisories, NVD |
References
archives.neohapsis.com/archives/bugtraq/2002-03/0108.html
osvdb.org/730
securityfocus.com/bid/4241
marc.info?l=bugtraq&m=101561384821761&w=2
online.securityfocus.com/advisories/3960
debian.org/security/2002/dsa-119
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novell.com/linux/security/advisories/2002_009_openssh_txt.html
calderasystems.com/support/security/advisories/CSSA-2002-012.0.txt
linuxsecurity.com/advisories/other_advisory-1937.html
distro.conectiva.com.br/atualizacoes?id=a&anuncio=000467
linux-mandrake.com/en/security/2002/MDKSA-2002-019.php
redhat.com/support/errata/RHSA-2002-043.html
iss.net/security_center/static/8383.php
openbsd.org/advisories/ssh_channelalloc.txt
nvd.nist.gov/vuln/detail/CVE-2002-0083
github.com/advisories/GHSA-w9fg-77jf-ghf9