CVE-2022-46393: arm mbed_tls Out-of-bounds Read
CVSS: 9.8v3.1CriticalModified
AliasesopenSUSE-SU-2022:10257-1UBUNTU-CVE-2022-46393DEBIAN-CVE-2022-46393openSUSE-SU-2024:12581-1
Published 15-12-2022Last modified 21-04-2025
Vulnerability summary
CVE-2022-46393 is a critical (CVSS 9.8) Out-of-bounds Read vulnerability in arm mbed_tls. EPSS estimates a 1.26% chance of exploitation in the next 30 days, higher than 69% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)EPSS score
1.26%
0%100%
Low · +0.10 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 1 · Related 1Timeline
- 15-12-2022PublishedVulnerability first disclosed.
- 21-04-2025Last modifiedVulnerability information updated.
Description
An issue was discovered in Mbed TLS before 2.28.2 and 3.x before 3.3.0. There is a potential heap-based buffer overflow and heap-based buffer over-read in DTLS if MBEDTLS_SSL_DTLS_CONNECTION_ID is enabled and MBEDTLS_SSL_CID_IN_LEN_MAX > 2 * MBEDTLS_SSL_CID_OUT_LEN_MAX.
CVSS metrics
4 scores · 4 sources · 1 versionCritical 9.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
1.26%
Chance of exploitation in the next 30 days
Percentile
69%
Versus all other CVEs
30-day change
+0.10 pp
From 1.16% on 19-09-2026
19-09-202619-10-2026
EPSS score1.26%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Opensuse2 products
- mbedtls-2&distro=openSUSE Tumbleweed< 2.28.2-1.1
- mbedtls&distro=openSUSE Leap 15.4< 2.28.0-bp154.2.3.1
Arm1 product
- mbed_tls< 2.28.2
Debian1 product
- mbedtls< 2.28.2-1
Fedoraproject1 product
- fedoraEOL36 | 37
Suse1 product
- mbedtls&distro=SUSE Package Hub 15 SP4< 2.28.0-bp154.2.3.1
Trustedfirmware1 product
- mbed_tls≥ 3.0.0, < 3.3.0
Ubuntu1 product
- mbedtlsAll versions (No fix recorded)
7 vendors · 8 products
References
11 links- lists.fedoraproject.org/archives/…Vendor Advisory
- lists.fedoraproject.org/archives/…Vendor Advisory
- lists.opensuse.org/archives/…Advisory
