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CVE-2020-36433

24
FAUCET Score

CVE-2020-36433 describes a high-severity vulnerability in the Rust 'chunky' crate (through 2020-08-25) where the Chunk API fails to enforce an alignment requirement. This flaw, rated 7.5 CVSSv3.1, could allow an unauthenticated attacker to achieve high integrity impact without user interaction, though confidentiality and availability are not affected. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2020-08-25CPE matchmatch criteria
cpe:2.3:a:aeplay:chunky:*:*:*:*:*: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:H/A:N

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

Exploit Intelligence

EPSS Score
0.92%
Probability of exploitation in next 30 days
EPSS Percentile
56.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0092 is in the 31st 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

No media coverage found for this CVE.

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

Remediation

Vendor Advisories (1)

rustGHSA-qg24-8xj4-gj2hhigh

Unaligned memory allocation in chunky

Aug 25, 2021

References

raw.githubusercontent.com / rustsec/advisory-db/main/crates/chunky/RUSTSEC-2020-0035.md
Third Party Advisory
rustsec.org / advisories/RUSTSEC-2020-0035.html
Third Party Advisory