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CVE-2021-26952

23
FAUCET Score

CVE-2021-26952 is a high-severity vulnerability affecting the ms3d crate for Rust, specifically versions prior to 0.1.3. This flaw allows attackers to potentially extract sensitive information from uninitialized memory locations through the IoReader::read function. With a CVSS score of 7.5, it presents a high risk due to its network-based attack vector and low attack complexity, leading to a high confidentiality impact. There is currently no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.1.3CPE matchmatch criteria
cpe:2.3:a:ms3d_project:ms3d:*:*:*:*:*: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:H/I:N/A:N

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

Exploit Intelligence

EPSS Score
1.56%
Probability of exploitation in next 30 days
EPSS Percentile
72.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0156 is in the 54th percentile among its peer group of 51,506 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

Patch Available

Vendor Patches (1)

rustpatch availablevia ghsa
Product: ms3dFixed in: 0.1.3

Vendor Advisories (1)

rustGHSA-9f5r-vqm5-m342high

Use of Uninitialized Resource in ms3d

Aug 25, 2021

References

rustsec.org / advisories/RUSTSEC-2021-0016.html
ExploitVendor Advisory