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CVE-2021-25904

22
FAUCET Score

CVE-2021-25904 is a high-severity vulnerability (CVSS 7.5) affecting the av-data crate for Rust, specifically versions prior to 0.3.0. This issue involves a raw pointer dereference that can lead to reading arbitrary memory addresses, often resulting in a denial of service through a segfault. The vulnerability is network-exploitable with low attack complexity and no user interaction required, but it primarily impacts availability rather than confidentiality or integrity. Currently, 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
< 0.3.0CPE matchmatch criteria
cpe:2.3:a:av-data_project:av-data:*:*:*:*:*: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
1.33%
Probability of exploitation in next 30 days
EPSS Percentile
68.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0133 is in the 48th 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: av-dataFixed in: 0.3.0

Vendor Advisories (1)

rustGHSA-352p-rhvq-7g78high

Null pointer deference in av-data

Aug 25, 2021

References

rustsec.org / advisories/RUSTSEC-2021-0007.html
ExploitThird Party Advisory