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CVE-2020-35888

30
FAUCET Score

CVE-2020-35888 describes a critical vulnerability in the Rust 'arr' crate, specifically affecting versions through 2020-08-25, where uninitialized memory is improperly dropped by the Array::new_from_template function. This flaw carries a CVSS score of 9.8 (CRITICAL), indicating a network-exploitable vulnerability with low attack complexity and high impacts on confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion with 10 mentions, suggesting awareness among security researchers.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2020-08-25CPE matchmatch criteria
cpe:2.3:a:arr_project:arr:*:*:*:*:*: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
1.52%
Probability of exploitation in next 30 days
EPSS Percentile
71.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0152 is in the 59th percentile among its peer group of 36,833 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

Vendor Advisories (1)

rustGHSA-36xw-hgfv-jwm7critical

Multiple security issues including data race, buffer overflow, and uninitialized memory drop in arr

Aug 25, 2021

References

rustsec.org / advisories/RUSTSEC-2020-0034.html
Third Party Advisory