Read the docs
TI-2002-00618 Aliases CVE-2002-0639GHSA-p3cc-85g2-jg55

Integer overflow in sshd in OpenSSH 2.9.9 through 3.3 allows remote attackers to execute…

Priority MEDIUM 60CWE-190Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-190 and the CVSS impact.

Summary

Integer overflow in sshd in OpenSSH 2.9.9 through 3.3 allows remote attackers to execute arbitrary code during challenge response authentication (ChallengeResponseAuthentication) when OpenSSH is using SKEY or BSD_AUTH authentication.

Why it matters now

EPSS 0.18288 97th percentileScored 2026-11-07
Public exploit Yes 3 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*2.9.9 – 3.3VulnerableOpenBSD
  • cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:* Versions 2.9.9 – 3.3 Vulnerable ·OpenBSD

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2002-0639
  2. 2026-10-03 Alias added: GHSA-p3cc-85g2-jg55

References

Exploit 3

Advisory 8

Other 4

  • TI-2023-19792 The PKCS#11 feature in ssh-agent in OpenSSH before 9.3p2 has an insufficiently… CVSS 3.1CRITICAL 9.8
  • TI-2024-05929 Openssh: regresshion - race condition in ssh allows rce/dos CVSS 3.1HIGH 8.1
  • TI-2023-10601 OpenSSH server (sshd) 9.1 introduced a double-free vulnerability during… CVSS 3.1MEDIUM 6.5
  • TI-2018-11033 OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying… CVSS 3.1MEDIUM 5.9
  • TI-2016-08105 Untrusted search path vulnerability in ssh-agent.c in ssh-agent in OpenSSH before 7.4… CVSS 3.1HIGH 7.3
  • TI-2023-28040 In ssh in OpenSSH before 9.6, OS command injection might occur if a user name or host… CVSS 3.1MEDIUM 6.5
See all 145 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences