THREATPORT/VULNERABILITY/CVE-2006-2421
HIGH SEVERITY

CVE-2006-2421

Fortressssh vulnerability

CVSS
7.5
EPSS
3.2%
EPSS pct
87th
Exploited
No known
Stack-based buffer overflow in Pragma FortressSSH 4.0.7.20 allows remote attackers to execute arbitrary code via long SSH_MSG_KEXINIT messages, which may cause an overflow when being logged. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.
Affected vendor
Pragma Systems
Affected product
Fortressssh
CVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
Published
2006-05-17

Risk analysis

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

Its EPSS score of 3.2% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 87% of all scored CVEs.

Check your external exposure to CVE-2006-2421

  • Confirm whether Pragma Systems Fortressssh is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2006-2421.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2006-2421

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2006-2421 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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