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Fencer Vulns
medium 5.9

CVE-2020-10941 json

Arm Mbed TLS before 2.16.5 allows attackers to obtain sensitive information (an RSA private key) by...

published 2020-03-24 6 y ago modified 2026-07-23 3 mo ago also EUVD-2020-3346 , JLSEC-2025-200

cvss
5.9
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits
0
none known

Summary

Arm Mbed TLS before 2.16.5 allows attackers to obtain sensitive information (an RSA private key) by measuring cache usage during an import.

Patch / fix

  • julia MbedTLS_jll 2.16.6+0
  • arm mbed_crypto 3.1.0
  • arm mbed_tls 2.16.5
  • mbedtls Debian 14, Debian 13, Debian 12 2.16.5-1

debian advisories DEBIAN-CVE-2020-10941

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-10941 updated cvss 5.9

mbedtls: cache attack against RSA key import in SGX

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.69% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N
OSV 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
julia MbedTLS_jll
<2.16.6+0
2.16.6+0

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.