CVE-2002-0083

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

9.8 CriticalPublic exploit

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

14.7%Up 5.8 points since Feb 4, 2022

What each source reports

NVD Score used9.8

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 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 10.0 HighAV:N/AC:L/Au:N/C:C/I:C/A:C
Weakness: CWE-193
Updated: 2026-11-02

CVE ListNo 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-2002-0083No 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-ghf9No 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.

Public exploits
Source	Link	Date
Exploit-DB	OpenSSH 2.x/3.0.1/3.0.2 - Channel Code Off-by-One	2002-03-07

History

History
Recorded	Changed	Sources
Nov 10, 2026	facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, NVD

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

In short

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.

References

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