VIR Vulnerability Intelligence Relay

CVE-2021-45450

high
Published 2021-12-21 · Modified 2026-06-05
💬 Discuss on Community ✚ Propose mitigation
CVSS v3
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4 NEW
—
not yet in upstream
VIR risk
7.5

Description

In Mbed TLS before 2.28.0 and 3.x before 3.1.0, psa_cipher_generate_iv and psa_cipher_encrypt allow policy bypass or oracle-based decryption when the output buffer is at memory locations accessible to an untrusted application.

Predictions

Exploit likelihood
83%
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 Fedora Affected 2 releases
VersionStatusFixed in
37 Affected —
36 Affected —
debian Debian Fixed 5 releases
VersionStatusFixed in
trixie Fixed 0
sid Fixed 0
forky Fixed 0
bullseye Fixed 0
bookworm Fixed 0

Application impact
VendorProductVersionsFixed
trustedfirmwarembed_tls{"startIncluding":"2.22.0","endExcluding":"2.28.0"}2.28.0
trustedfirmwarembed_tls3.0.0

References

CWEs

CWE-327

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

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