Cygnus vulnerabilitiesNone on the known-exploited list.

Vendor
The short answer

Cygnus has 6 published vulnerabilities across 2 products in our catalogue. None of them is on the list of flaws known to be exploited today. The most affected product is Cygnus Network Security, with 6. If you run Cygnus software, patch the exploited flaws first.

See the exploited flaws

We keep watching the known-exploited list.

Products

Which Cygnus products have the most vulnerabilities?

Cygnus Network Security leads with 6 published vulnerabilities. Open a product to see its versions and which of its flaws criminals are already using.

  1. Cygnus Network Security6
  2. Kerbnet6
Published vulnerabilities
Known exploited

Which Cygnus vulnerabilities are being exploited?

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

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

Exploit likelihood

Which Cygnus 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. 17%

    Buffer overflow in krb_rd_req function in Kerberos 4 and 5 allows remote attackers to gain root privileges.

    CVSS10.0Published16 May 2000
  2. 4.0%

    Buffer overflow in krb425_conv_principal function in Kerberos 5 allows remote attackers to gain root privileges.

    CVSS10.0Published16 May 2000
  3. 4.0%

    Buffer overflow in krshd in Kerberos 5 allows remote attackers to gain root privileges.

    CVSS10.0Published16 May 2000
  4. 2.4%

    Kerberos 4 KDC program improperly frees memory twice (aka "double-free"), which allows remote attackers to cause a denial of service.

    CVSS5.0Published9 Jun 2000
  5. 2.3%

    Kerberos 4 KDC program does not properly check for null termination of AUTH_MSG_KDC_REQUEST requests, which allows remote attackers to cause a denial of service via a malformed request.

    CVSS5.0Published9 Jun 2000
  6. 0.4%

    Buffer overflow in ksu in Kerberos 5 allows local users to gain root privileges.

    CVSS7.2Published16 May 2000
Every product

All Cygnus products we track.

2 products, most vulnerabilities first. Find the ones you run, then open a product to see its versions and exploited flaws.

Precursor Intelligence

Running Cygnus? 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 →

Our catalogue lists 6 published vulnerabilities across 2 products and 2 versions from Cygnus.

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

Cygnus Network Security, with 6 published vulnerabilities. Its own page lists the ones known to be exploited.

Create a Precursor Intelligence account and track the Cygnus products you run. We match them against every published flaw, give each one a risk score from 0 to 100 and tell you as soon as we spot one that affects you, by email, in the app or by webhook.