CVE-2021-22567

FAUCET Score

CVE-2021-22567 describes a vulnerability in Dart and its SDK where bidirectional Unicode text can be misinterpreted during compilation, allowing attackers to embed invisible malicious code that alters program behavior. This low-severity vulnerability (CVSS 3.5) requires user interaction and low privileges, with a potential impact on integrity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		< 2.15.0CPE matchmatch criteria	cpe:2.3:a:dart:dart_software_development_kit::::::::

CVSS Data

CVSS version used by this source: 3.1

4.6MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

LOW

Exploitability Score

2.1

Impact Score

2.5

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.60%

Probability of exploitation in next 30 days

EPSS Percentile

45.1%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0060 is in the 86th percentile among its peer group of 406 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.2 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference

View patch

References

github.com / dart-lang/sdk/blob/main/CHANGELOG.md

Release NotesThird Party Advisory

github.com / dart-lang/sdk/commit/52519ea8eb4780c468c4c2ed00e7c8046ccfed41

PatchThird Party Advisory