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

Product1 versions
The short answer

Proxy Server is made by Microsoft. We track 5 published vulnerabilities in it, across 1 version. None of them is on the list of flaws known to be exploited today. If you run Proxy Server, keep it on a version the vendor still supports.

See the riskiest flaws

We keep watching the known-exploited list.

Known exploited

Which Proxy Server vulnerabilities are being exploited?

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

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

Exploit likelihood

Which Proxy 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. 80%

    IIS 4.0 and 5.0 does not properly perform ISAPI extension processing if a virtual directory is mapped to a UNC share, which allows remote attackers to read the source code of ASP and other files, aka the "Virtualized...

    CVSS5.0Published30 Mar 2000
  2. 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
  3. 41%

    Buffer overflow in the H.323 filter of Microsoft Internet Security and Acceleration Server 2000 allows remote attackers to execute arbitrary code in the Microsoft Firewall Service via certain H.323 traffic, as...

    CVSS10.0Published17 Feb 2004
  4. 18%

    The Winsock Proxy service in Microsoft Proxy Server 2.0 and the Microsoft Firewall service in Internet Security and Acceleration (ISA) Server 2000 allow remote attackers to cause a denial of service (CPU consumption...

    CVSS5.0Published5 May 2003
  5. 17%

    Microsoft Proxy Server 2.0 and Microsoft ISA Server 2000 (which is included in Small Business Server 2000 and Small Business Server 2003 Premium Edition) allows remote attackers to spoof trusted Internet content on a...

    CVSS7.5Published27 Jan 2005
Precursor Intelligence

Running Proxy 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 5 published vulnerabilities listed under the name Proxy Server, across 1 version.

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

Create a Precursor Intelligence account and track Proxy 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.