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CVE-2019-18222
The ECDSA signature implementation in ecdsa.c in Arm Mbed Crypto 2.1 and Mbed TLS through 2.19.1 does not reduce the blinded scalar before…
Medium4.7EPSS 0.34%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
The ECDSA signature implementation in ecdsa.c in Arm Mbed Crypto 2.1 and Mbed TLS through 2.19.1 does not reduce the blinded scalar before computing the inverse, which allows a local attacker to recover the private key via side-channel attacks.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium4.7 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.34% · top 72% of all CVEs (6 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.7.
Weakness
Affected products
n/a
- affected n/a
References (5)
- https://tls.mbed.org/tech-updates/security-advisories (opens in a new tab)x_transferred
- https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2019-12 (opens in a new tab)x_transferred
- FEDORA-2020-8d3ea0fe8d (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2020-5bcfae9f46 (opens in a new tab)vendor-advisoryx_transferred
- [debian-lts-announce] 20221225 [SECURITY] [DLA 3249-1] mbedtls security update (opens in a new tab)mailing-listx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2019-18222)Record last updated .