THREATPORT/VULNERABILITY/CVE-2005-1907
MEDIUM SEVERITY

CVE-2005-1907

Isa Server vulnerability

CVSS
5.0
EPSS
19.3%
EPSS pct
97th
Exploited
No known
The ISA Firewall service in Microsoft Internet Security and Acceleration (ISA) Server 2000 allows remote attackers to cause a denial of service (Wspsrv.exe crash) via a large amount of SecureNAT network traffic.
Affected vendor
Microsoft
Affected product
Isa Server
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Published
2005-05-31

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 availability.

Its EPSS score of 19.3% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 97% of all scored CVEs.

Check your external exposure to CVE-2005-1907

  • Confirm whether Microsoft Isa Server is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2005-1907.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2005-1907

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2005-1907 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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Are you exposed to CVE-2005-1907?

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