CVE-2021-28792: The unofficial Swift Development Environment extension before 2.12.1 for Visual Studio Code allows remote atta

Q: How do I fix CVE-2021-28792?

swift development environment: upgrade to 2.12.1. Exact commands for each OS are on this page.

Q: Is CVE-2021-28792 being exploited?

CVE-2021-28792 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-28792 affect?

CVE-2021-28792 affects swift development environment. Severity is high (CVSS 7.8). The unofficial Swift Development Environment extension before 2.12.1 for Visual Studio Code allows remote attackers to execute arbitrary code by constructing a malicious workspace with a crafted sourcekit-lsp.serverPath, swift.languageServe

This month

HIGH 7.8UPGRADE

CVE-2021-28792 is a high-severity flaw (CVSS 7.8) affecting swift development environment. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The unofficial Swift Development Environment extension before 2.12.1 for Visual Studio Code allows remote attackers to execute arbitrary code by constructing a malicious workspace with a crafted sourcekit-lsp.serverPath, swift.languageServerPath, swift.path.sourcekite, swift.path.sourcekiteDockerMode, swift.path.swift_driver_bin, or swift.path.shell configuration value that triggers execution upon opening the workspace.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.7% (top 23%)
CISA exploited list	No
Published	2021-03-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: swift development environment project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-03-18 16:15 UTCPublished CVE record published
2026-06-17 03:46 UTCUpdated Record last modified

swift development environment project swift development environment UPGRADE

Affected: < 2.12.1

Fixed in: 2.12.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy swift-development-environment || rpm -q swift-development-environment || swift-development-environment --version

2. UPGRADE to 2.12.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade swift-development-environment

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade swift-development-environment

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-28792?

swift development environment: upgrade to 2.12.1. Exact commands for each OS are on this page.

Is CVE-2021-28792 being exploited?

CVE-2021-28792 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-28792 affect?

CVE-2021-28792 affects swift development environment. Severity is high (CVSS 7.8). The unofficial Swift Development Environment extension before 2.12.1 for Visual Studio Code allows remote attackers to execute arbitrary code by constructing a malicious workspace with a crafted sourcekit-lsp.serverPath, swift.languageServe

How urgent is CVE-2021-28792?

Priority 47/100. High severity

Software pages

Visual Studio vulnerabilities · Swift vulnerabilities

References

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