Isa Server vulnerabilitiesRanked by how likely they are to be used.

Product3 versions
The short answer

Isa Server is made by Microsoft. We track 21 published vulnerabilities in it, across 3 versions. None of them is on the list of flaws known to be exploited today. If you run Isa Server, keep it on a version the vendor still supports.

See the riskiest flaws

We keep watching the known-exploited list.

Known exploited

Which Isa Server vulnerabilities are being exploited?

This is the list that matters most: flaws criminals are using now.

None of Isa Server's published vulnerabilities is on the list of flaws known to be exploited today. We keep watching that list.

Exploit likelihood

Which Isa Server flaws are most likely to be used?

Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.

50% or more10% to 49%Under 10%
  1. 54%

    Buffer overflow in gopher client for Microsoft Internet Explorer 5.1 through 6.0, Proxy Server 2.0, or ISA Server 2000 allows remote attackers to execute arbitrary code via a gopher:// URL that redirects the user to...

    CVSS7.5Published3 Jul 2002
  2. 28%

    Microsoft Internet Security and Acceleration (ISA) Server 2000 Web Proxy allows remote attackers to cause a denial of service via a long web request with a specific type.

    CVSS7.5Published2 Jul 2001
  3. 26%

    Microsoft Internet Security and Acceleration (ISA) Server 2006 Gold and SP1, when Radius OTP is enabled, uses the HTTP-Basic authentication method, which allows remote attackers to gain the privileges of an arbitrary...

    CVSS9.0Published15 Jul 2009
  4. 26%

    Microsoft ISA Server 2000 allows remote attackers to connect to services utilizing the NetBIOS protocol via a NetBIOS connection with an ISA Server that uses the NetBIOS (all) predefined packet filter.

    CVSS7.5Published14 Jun 2005
  5. 22%

    Cross-site scripting (XSS) vulnerability in Microsoft Internet Security and Acceleration (ISA) Server 2000 allows remote attackers to inject arbitrary web script via a URL containing the script in the domain name...

    CVSS6.8Published18 Aug 2003
  6. 19%

    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.

    CVSS5.0Published31 May 2005
  7. 19%

    Microsoft ISA Server 2000 allows remote attackers to poison the ISA cache or bypass content restriction policies via a malformed HTTP request packet containing multiple Content-Length headers.

    CVSS7.5Published14 Jun 2005
Precursor Intelligence

Running Isa Server? We'll keep checking.

Looking flaws up one at a time doesn't scale. Tell us what you run once, and we tell you which flaws matter to you, in what order, and keep watching for new ones.

  1. Tell us what you runPick your software from a list, or let us work it out from your website.
  2. We match it to every flawOver 400,000 published flaws, checked against your list.
  3. Ranked by real-world riskA 0 to 100 score, led by evidence criminals are using it.
  4. Told as soon as we knowAn alert by email, in the app or by webhook to your own tools.

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FAQ

Common questions, answered plainly.

Something else? Talk to the team →

We track 21 published vulnerabilities listed under the name Isa Server, across 3 versions.

None of Isa Server's vulnerabilities is on the list of flaws known to be exploited today.

Create a Precursor Intelligence account and track Isa Server. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.