OpenSSL vulnerabilitiesAnd the versions its exploited flaws hit.

Product1 known exploited245 versions
The short answer

OpenSSL is made by OpenSSL. We track 256 published vulnerabilities in it, across 245 versions. 1 of them is on the list of flaws known to be exploited, the newest added on 4 May 2022. If you run OpenSSL, check your version against the exploited flaws below and patch those first.

Check your version

The most recent OpenSSL flaw added to the known-exploited list is CVE-2014-0160, on 4 May 2022. We keep watching the known-exploited list.

Versions

Which versions of OpenSSL do the exploited flaws hit?

Each exploited flaw lists the versions it affects, usually as ranges. "1.0.1 to before 1.0.1g" means from 1.0.1 up to, but not including, 1.0.1g. Find your version, then patch.

  • CVE-2014-0160Exploited list, 4 May 2022

    OpenSSL Information Disclosure Vulnerability

    1.0.1 to before 1.0.1g
Known exploited

Which OpenSSL vulnerabilities are being exploited?

1 flaw is on the government list of vulnerabilities known to be exploited. These are the ones criminals are using now, so they go first, whatever their severity score says.

  1. 7.5
    CVE-2014-0160HighKnown exploited
    OpenSSL Information Disclosure Vulnerability

    The TLS and DTLS implementations in OpenSSL do not properly handle Heartbeat Extension packets, which allows remote attackers to obtain sensitive information.

    Chance of use>99%Known exploited since4 May 2022
Exploit likelihood

Which OpenSSL 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. >99%
    CVE-2014-0160HighKnown exploited

    The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly handle Heartbeat Extension packets, which allows remote attackers to obtain sensitive information from process memory via...

    CVSS7.5Published7 Apr 2014
  2. >99%

    The SSL protocol 3.0, as used in OpenSSL through 1.0.1i and other products, uses nondeterministic CBC padding, which makes it easier for man-in-the-middle attackers to obtain cleartext data via a padding-oracle...

    CVSS3.4Published15 Oct 2014
  3. >99%

    The dtls1_reassemble_fragment function in d1_both.c in OpenSSL before 0.9.8za, 1.0.0 before 1.0.0m, and 1.0.1 before 1.0.1h does not properly validate fragment lengths in DTLS ClientHello messages, which allows...

    CVSS6.8Published5 Jun 2014
  4. >99%

    The TLS protocol 1.2 and earlier, when a DHE_EXPORT ciphersuite is enabled on a server but not on a client, does not properly convey a DHE_EXPORT choice, which allows man-in-the-middle attackers to conduct...

    CVSS3.7Published21 May 2015
  5. 99%

    The ssl3_get_key_exchange function in s3_clnt.c in OpenSSL before 0.9.8zd, 1.0.0 before 1.0.0p, and 1.0.1 before 1.0.1k allows remote SSL servers to conduct RSA-to-EXPORT_RSA downgrade attacks and facilitate...

    CVSS4.3Published9 Jan 2015
  6. 96%

    In addition to the c_rehash shell command injection identified in CVE-2022-1292, further circumstances where the c_rehash script does not properly sanitise shell metacharacters to prevent command injection were found...

    CVSS7.3Published21 Jun 2022
  7. 95%

    OpenSSL before 0.9.8za, 1.0.0 before 1.0.0m, and 1.0.1 before 1.0.1h does not properly restrict processing of ChangeCipherSpec messages, which allows man-in-the-middle attackers to trigger use of a zero-length master...

    CVSS7.4Published5 Jun 2014
  8. 95%

    The DES and Triple DES ciphers, as used in the TLS, SSH, and IPSec protocols and other protocols and products, have a birthday bound of approximately four billion blocks, which makes it easier for remote attackers to...

    CVSS7.5Published1 Sep 2016
  9. 92%

    A buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking.

    CVSS7.5Published1 Nov 2022
  10. 91%

    A buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking.

    CVSS7.5Published1 Nov 2022
Precursor Intelligence

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We track 256 published vulnerabilities listed under the name OpenSSL, across 245 versions. The most recent OpenSSL flaw added to the known-exploited list is CVE-2014-0160, on 4 May 2022.

1 is on the list of flaws known to be exploited. The most recently added is CVE-2014-0160.

Each flaw names its own versions, usually as ranges. The newest, CVE-2014-0160, affects 1.0.1 to before 1.0.1g. The versions for every exploited flaw are listed on this page.

Create a Precursor Intelligence account and track OpenSSL. 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.