Mbed TLS vulnerabilitiesRanked by how likely they are to be used.
Mbed TLS is made by Arm. We track 58 published vulnerabilities in it, across 142 versions. None of them is on the list of flaws known to be exploited today. If you run Mbed TLS, keep it on a version the vendor still supports.
We keep watching the known-exploited list.
Which Mbed TLS vulnerabilities are being exploited?
This is the list that matters most: flaws criminals are using now.
None of Mbed TLS's published vulnerabilities is on the list of flaws known to be exploited today. We keep watching that list.
Which Mbed TLS 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.
- 4.8%CVE-2018-0488Critical
ARM mbed TLS before 1.3.22, before 2.1.10, and before 2.7.0, when the truncated HMAC extension and CBC are used, allows remote attackers to execute arbitrary code or cause a denial of service (heap corruption) via a...
- 3.7%CVE-2015-5291Medium
Heap-based buffer overflow in PolarSSL 1.x before 1.2.17 and ARM mbed TLS (formerly PolarSSL) 1.3.x before 1.3.14 and 2.x before 2.1.2 allows remote SSL servers to cause a denial of service (client crash) and...
- 3.3%CVE-2018-0487Critical
ARM mbed TLS before 1.3.22, before 2.1.10, and before 2.7.0 allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow) via a crafted certificate chain that is mishandled during...
- 3.1%CVE-2017-18187Critical
In ARM mbed TLS before 2.7.0, there is a bounds-check bypass through an integer overflow in PSK identity parsing in the ssl_parse_client_psk_identity() function in library/ssl_srv.c.
- 2.9%CVE-2015-8036Medium
Heap-based buffer overflow in ARM mbed TLS (formerly PolarSSL) 1.3.x before 1.3.14 and 2.x before 2.1.2 allows remote SSL servers to cause a denial of service (client crash) and possibly execute arbitrary code via a...
- 2.8%CVE-2018-0497Medium
ARM mbed TLS before 2.12.0, before 2.7.5, and before 2.1.14 allows remote attackers to achieve partial plaintext recovery (for a CBC based ciphersuite) via a timing-based side-channel attack.
- 2.8%CVE-2021-44732Critical
Mbed TLS before 3.0.1 has a double free in certain out-of-memory conditions, as demonstrated by an mbedtls_ssl_set_session() failure.
- 2.3%CVE-2025-47917High
Mbed TLS before 3.6.4 allows a use-after-free in certain situations of applications that are developed in accordance with the documentation.
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1 new flaw affects software Acme tracks
ARM mbed TLS before 1.3.22, before 2.1.10, and before 2.7.0, when the truncated HMAC extension and CBC are used, allows remote attackers to execute arbitrary code or cause a denial of service (heap corruption) via a crafted application packet within a TLS or DTLS session.
- Matched to
- Mbed TLS on Acme's software list
- What to do
- Plan in the vendor’s update
Sent to the alert recipients Acme chose. Also in the app and to Acme's webhook.
We track 58 published vulnerabilities listed under the name Mbed TLS, across 142 versions.
None of Mbed TLS's vulnerabilities is on the list of flaws known to be exploited today.
Create a Precursor Intelligence account and track Mbed TLS. 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.