THREATPORT/VULNERABILITY/CVE-2002-0640
HIGH SEVERITY

CVE-2002-0640

Openssh vulnerability

CVSS
10.0
EPSS
27.3%
EPSS pct
98th
Exploited
No known
Buffer overflow in sshd in OpenSSH 2.3.1 through 3.3 may allow remote attackers to execute arbitrary code via a large number of responses during challenge response authentication when OpenBSD is using PAM modules with interactive keyboard authentication (PAMAuthenticationViaKbdInt).
Affected vendor
Openbsd
Affected product
Openssh
CVSS vector
AV:N/AC:L/Au:N/C:C/I:C/A:C
Published
2002-07-03

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to complete impact to confidentiality, complete impact to integrity, complete impact to availability.

Its EPSS score of 27.3% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2002-0640

  • Confirm whether Openbsd Openssh is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2002-0640.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2002-0640

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2002-0640 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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