CVE-2019-16910

medium

Published 2019-09-26 · Modified 2026-06-05

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CVSS v3

5.3

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

CVSS v4 NEW

—

not yet in upstream

VIR risk

5.3

Description

Arm Mbed TLS before 2.19.0 and Arm Mbed Crypto before 2.0.0, when deterministic ECDSA is enabled, use an RNG with insufficient entropy for blinding, which might allow an attacker to recover a private key via side-channel attacks if a victim signs the same message many times. (For Mbed TLS, the fix is also available in versions 2.7.12 and 2.16.3.)

Predictions

Exploit likelihood

63%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

Fedora Affected 3 releases

Version	Status	Fixed in
31	Affected	—
30	Affected	—
29	Affected	—

Debian Mixed 6 releases

Version	Status	Fixed in
trixie	Fixed	`2.16.3-1`
sid	Fixed	`2.16.3-1`
forky	Fixed	`2.16.3-1`
bullseye	Fixed	`2.16.3-1`
bookworm	Fixed	`2.16.3-1`
10.0	Affected	—

Application impact

Vendor	Product	Versions	Fixed
arm	mbed_crypto	`{"endExcluding":"2.0.0"}`	`2.0.0`
arm	mbed_tls	`{"endExcluding":"2.7.12"}`	`2.7.12`
arm	mbed_tls	`{"startIncluding":"2.8.0","endExcluding":"2.16.3"}`	`2.16.3`
trustedfirmware	mbed_tls	`{"startIncluding":"2.17.0","endExcluding":"2.19.0"}`	`2.19.0`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.