Cyber Resilience

CVE-2021-45688

Critical

Published: 27 December 2021

Published
27 December 2021
Modified
30 September 2025
KEV Added
—
Patch
—
CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0043 63.2th percentile
Risk Priority 20 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-45688 is a critical-severity Use of Uninitialized Resource (CWE-908) vulnerability in Ash-Rs Ash. Its CVSS base score is 9.8 (Critical).

Operationally, ranked in the top 36.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

An issue was discovered in the ash crate before 0.33.1 for Rust. util::read_spv may read from uninitialized memory locations.

CWE(s)
CWE-908

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

ash-rs
ash
≤ 0.33.1

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References