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CVE-2021-28793

29
FAUCET Score

CVE-2021-28793 describes an incorrect access control vulnerability in vscode-restructuredtext versions prior to 146.0.0, affecting the lextudio restructuredtext extension. This critical vulnerability (CVSS 9.8) allows an unauthenticated attacker to execute arbitrary binaries by tricking a user into opening a specially crafted project folder, leading to complete compromise of confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 147.0.0CPE matchmatch criteria
cpe:2.3:a:lextudio:restructuredtext:*:*:*:*:*:visual_studio_code:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.63%
Probability of exploitation in next 30 days
EPSS Percentile
73.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0163 is in the 61st percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 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 / vscode-restructuredtext/vscode-restructuredtext/commit/1dd3e878a5559e3dfe0e48f145c90418b208c5af
PatchThird Party Advisory
github.com / vscode-restructuredtext/vscode-restructuredtext/releases
Release NotesThird Party Advisory
github.com / vscode-restructuredtext/vscode-restructuredtext/releases/tag/147.0.0
Release NotesThird Party Advisory
vuln.ryotak.me / advisories/37
Third Party Advisory