CVE-2018-0497
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.
Does this matter?
Lower severity and a low EPSS score (2.77%). Track it; it rarely justifies an emergency change on its own.
Description
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. This vulnerability exists because of an incorrect fix (with a wrong SHA-384 calculation) for CVE-2013-0169.
- CVSS 3.0
- 5.9 MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 2.77% probability · 86th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- arm/mbed tls · debian/debian linux
- Source
- security@debian.org
EPSS 2.8% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://lists.debian.org/debian-lts-announce/2018/09/msg00029.htmlMailing List, Third Party Advisory
- https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2018-02Mitigation, Third Party Advisory
- https://usn.ubuntu.com/4267-1/
- https://www.debian.org/security/2018/dsa-4296Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/09/msg00029.htmlMailing List, Third Party Advisory
- https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2018-02Mitigation, Third Party Advisory
- https://usn.ubuntu.com/4267-1/
- https://www.debian.org/security/2018/dsa-4296Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.