Wolfssl vulnerabilitiesRanked by how likely they are to be used.

Product114 versions
The short answer

Wolfssl is made by Wolfssl. We track 58 published vulnerabilities in it, across 114 versions. None of them is on the list of flaws known to be exploited today. If you run Wolfssl, keep it on a version the vendor still supports.

See the riskiest flaws

We keep watching the known-exploited list.

Known exploited

Which Wolfssl vulnerabilities are being exploited?

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

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

Exploit likelihood

Which Wolfssl 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. 27%

    wolfSSL prior to version 3.12.2 provides a weak Bleichenbacher oracle when any TLS cipher suite using RSA key exchange is negotiated.

    CVSS7.5Published13 Dec 2017
  2. 9.2%

    wolfSSL 4.0.0 has a Buffer Overflow in DoPreSharedKeys in tls13.c when a current identity size is greater than a client identity size.

    CVSS9.8Published23 May 2019
  3. 8.5%

    A specially crafted x509 certificate can cause a single out of bounds byte overwrite in wolfSSL through 3.10.2 resulting in potential certificate validation vulnerabilities, denial of service and possible remote code...

    CVSS9.8Published24 May 2017
  4. 5.8%

    In wolfSSL before 5.5.1, malicious clients can cause a buffer overflow during a TLS 1.3 handshake.

    CVSS7.5Published29 Sep 2022
  5. 5.0%

    wolfSSL (formerly CyaSSL) before 3.6.8 does not properly handle faults associated with the Chinese Remainder Theorem (CRT) process when allowing ephemeral key exchange without low memory optimizations on a server,...

    CVSS5.9Published22 Jan 2016
  6. 3.6%

    RsaPad_PSS in wolfcrypt/src/rsa.c in wolfSSL before 4.6.0 has an out-of-bounds write for certain relationships between key size and digest size.

    CVSS9.8Published6 Jan 2021
  7. 3.0%

    wolfSSL (formerly CyaSSL) before 3.6.8 allows remote attackers to cause a denial of service (resource consumption or traffic amplification) via a crafted DTLS cookie in a ClientHello message.

    CVSS7.5Published22 Jan 2016
  8. 2.8%

    wolfSSL CyaSSL before 2.9.4 allows remote attackers to have unspecified impact via multiple calls to the CyaSSL_read function which triggers an out-of-bounds read when an error occurs, related to not checking the...

    CVSS9.8Published28 Jan 2020
  9. 2.8%

    The DoAlert function in the (1) TLS and (2) DTLS implementations in wolfSSL CyaSSL before 2.9.4 allows remote attackers to have unspecified impact and vectors, which trigger memory corruption or an out-of-bounds read.

    CVSS9.8Published28 Jan 2020
  10. 2.8%

    The SSL 3 HMAC functionality in wolfSSL CyaSSL 2.5.0 before 2.9.4 does not check the padding length when verification fails, which allows remote attackers to have unspecified impact via a crafted HMAC, which triggers...

    CVSS9.8Published28 Jan 2020
Precursor Intelligence

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FAQ

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We track 58 published vulnerabilities listed under the name Wolfssl, across 114 versions.

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

Create a Precursor Intelligence account and track Wolfssl. 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.