X Window System vulnerabilitiesRanked by how likely they are to be used.

Product11 versions
The short answer

X Window System is made by X.org. We track 2 published vulnerabilities in it, across 11 versions. None of them is on the list of flaws known to be exploited today. If you run X Window System, keep it on a version the vendor still supports.

See the riskiest flaws

We keep watching the known-exploited list.

Known exploited

Which X Window System vulnerabilities are being exploited?

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

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

Exploit likelihood

Which X Window System 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. 11%

    LookupCol.c in X.Org X through X11R7.7 and libX11 before 1.7.1 might allow remote attackers to execute arbitrary code.

    CVSS9.8Published27 May 2021
  2. 4.4%

    The X render (Xrender) extension in X.org X Window System 7.0, 7.1, and 7.2, with Xserver 1.3.0 and earlier, allows remote authenticated users to cause a denial of service (daemon crash) via crafted values to the (1)...

    CVSS5.5Published2 May 2007
Precursor Intelligence

Running X Window System? 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.

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We track 2 published vulnerabilities listed under the name X Window System, across 11 versions.

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

Create a Precursor Intelligence account and track X Window System. 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.