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CVE-2020-25796

24
FAUCET Score

CVE-2020-25796 describes an unaligned reference vulnerability in the InlineArray implementation of the sized-chunks Rust crate, affecting versions through 0.6.2. This vulnerability carries a CVSS score of 7.5 (HIGH), indicating that an unauthenticated attacker could remotely trigger a denial of service. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.6.2CPE matchmatch criteria
cpe:2.3:a:sized-chunks_project:sized-chunks:*:*:*:*:*:rust:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.63%
Probability of exploitation in next 30 days
EPSS Percentile
73.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0163 is in the 56th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: 19064-16820Fixed in: 1.47.0-3
microsoftpatch availablevia msrc
Product: cm1 rust 1.47.0-3 on CBL Mariner 1.0Fixed in: 1.47.0-3
rustpatch availablevia ghsa
Product: sized-chunksFixed in: 0.6.3
ubuntupatch availablevia ubuntu_usn
Product: rust-sized-chunks (focal)Fixed in: 0.3.1-1ubuntu0.1~esm1

Vendor Advisories (3)

ubuntuUSN-8118-1

sized-chunks vulnerabilities

Mar 23, 2026
rustGHSA-fqpx-cq8x-9wp4high

Unaligned references in sized-chunks

Aug 25, 2021
microsoft2020-Sep/CVE-2020-25796Important

An issue was discovered in the sized-chunks crate through 0.6.2 for Rust. In the InlineArray implementation an unaligned reference may be generated for a type that has a large alignment requirement.

Sep 8, 2020

References

github.com / bodil/sized-chunks/issues/11
ExploitPatchThird Party Advisory
rustsec.org / advisories/RUSTSEC-2020-0041.html
Third Party Advisory