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CVE-2021-45706

30
FAUCET Score

CVE-2021-45706 is a critical vulnerability affecting the zeroize_derive crate for Rust, specifically versions prior to 1.1.1. The flaw, categorized as CWE-459, involves a failure to zero out dropped memory for enums, potentially leading to sensitive data exposure. With a CVSS score of 9.8, this vulnerability presents a critical risk due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While no active exploitation, public exploit code, or significant community discussion has been observed, its high severity warrants immediate attention for affected systems.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.1.1CPE matchmatch criteria
cpe:2.3:a:zeroize_derive_project:zeroize_derive:*:*:*:*:*:rust:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.19%
Probability of exploitation in next 30 days
EPSS Percentile
64.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0119 is in the 51st percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

rustpatch availablevia ghsa
Product: zeroize_deriveFixed in: 1.1.1

Vendor Advisories (1)

rustGHSA-c5hx-w945-j4pqcritical

Memory flaw in zeroize_derive

Jan 6, 2022

References

raw.githubusercontent.com / rustsec/advisory-db/main/crates/zeroize_derive/RUSTSEC-2021-0115.md
Third Party Advisory
rustsec.org / advisories/RUSTSEC-2021-0115.html
Third Party Advisory