Linux vulnerabilitiesRanked by how likely they are to be used.

Product27 versions
The short answer

Linux is made by Red Hat. We track 252 published vulnerabilities listed under that exact name, across 27 versions. None of them is on the list of flaws known to be exploited today. Red Hat lists newer releases under their own names, such as Linux Advanced Workstation, so check those pages too.

See the riskiest flaws

We keep watching the known-exploited list.

Other names

Is Linux listed under other names? Yes.

Red Hat also lists Linux under more specific names, such as Linux Advanced Workstation and Linux Desktop. Flaws listed only under those names are counted on their own pages, not here. If you run one of these, open its page for its own exploited flaws.

Known exploited

Which Linux vulnerabilities are being exploited?

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

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

Exploit likelihood

Which Linux 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. 79%

    Format string vulnerability in use_syslog() function in LPRng 3.6.24 allows remote attackers to execute arbitrary commands.

    CVSS10.0Published19 Dec 2000
  2. 74%

    The web GUI for the Linux Virtual Server (LVS) software in the Red Hat Linux Piranha package has a backdoor password that allows remote attackers to execute arbitrary commands.

    CVSS10.0Published24 Apr 2000
  3. 66%

    Apache on Red Hat Linux with with the UserDir directive enabled generates different error codes when a username exists and there is no public_html directory and when the username does not exist, which could allow...

    CVSS5.0Published12 Sep 2001
  4. 53%

    A Unix account has a default, null, blank, or missing password.

    CVSS7.5Published1 Mar 1998
  5. 52%

    Unspecified vulnerability in the dpwinsup module (dpwinsup.dll) for dpwingad (dpwingad.exe) in HP Data Protector Express and Express SSE 3.x before build 47065, and Express and Express SSE 4.x before build 46537,...

    CVSS7.2Published14 May 2009
  6. 45%

    Command execution via shell metachars in INN daemon (innd) 1.5 using "newgroup" and "rmgroup" control messages, and others.

    CVSS9.8Published4 Dec 1996
  7. 42%

    The passwd.php3 CGI script in the Red Hat Piranha Virtual Server Package allows local users to execute arbitrary commands via shell metacharacters.

    CVSS10.0Published24 Apr 2000
  8. 41%

    Various PDF viewers including (1) Adobe Acrobat 5.06 and (2) Xpdf 1.01 allow remote attackers to execute arbitrary commands via shell metacharacters in an embedded hyperlink.

    CVSS7.5Published24 Jul 2003
  9. 40%

    Buffer overflows in wuarchive ftpd (wu-ftpd) and ProFTPD lead to remote root access, a.k.a.

    CVSS10.0Published9 Feb 1999
  10. 29%

    Inverse query buffer overflow in BIND 4.9 and BIND 8 Releases.

    CVSS10.0Published8 Apr 1998
Precursor Intelligence

Running Linux? 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 252 published vulnerabilities listed under the name Linux, across 27 versions.

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

Red Hat also lists Linux under more specific names, such as Linux Advanced Workstation and Linux Desktop. Flaws listed only under those names are counted on their own pages, not here. Open the release you run to see its own list.

Create a Precursor Intelligence account and track Linux. 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.