Medium severity · published Dec 15, 2022
CVE-2022-46392
An issue was discovered in Mbed TLS before 2.28.2 and 3.x before 3.3.0
5.3
CVSS
0.9%
EPSS
No
On KEV
Description
An issue was discovered in Mbed TLS before 2.28.2 and 3.x before 3.3.0. An adversary with access to precise enough information about memory accesses (typically, an untrusted operating system attacking a secure enclave) can recover an RSA private key after observing the victim performing a single private-key operation, if the window size (MBEDTLS_MPI_WINDOW_SIZE) used for the exponentiation is 3 or smaller.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 58% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
36; 37 · source: NVD
MT
Mbed Tls · Arm
before 2.28.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-46392
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-46392
Release Notes
https://github.com/Mbed-TLS/mbedtls/releases/tag/v2.28.2
Release Notes
https://github.com/Mbed-TLS/mbedtls/releases/tag/v3.3.0
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4BR7ZCVKLPGCOEEALUHZMFHXQHR6S4QL/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6XMKJ5IMJEPXYAHHU56Z4P2FSYIEAESB/
lists.debian.org
https://lists.debian.org/debian-lts-announce/2025/06/msg00034.html
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