What is CVE-2021-28953?

CVE-2021-28953 is a high-severity vulnerability in C\/c\+\+ Advanced Lint Project, classified under Uncontrolled Search Path Element. CVSS score: 7.8/10. Published 2021-03-21.

How severe is CVE-2021-28953?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in C\/c\+\+ Advanced Lint Project

CVE-2021-28953

The unofficial C/C++ Advanced Lint extension before 1.9.0 for Visual Studio Code allows attackers to execute arbitrary binaries if the user opens a crafted repository.

Published 2021-03-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.010 (61.6th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 61.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

C\/c\+\+ Advanced Lint Project

Weakness classification (CWE)

CWE-427 — Uncontrolled Search Path Element

References

marketplace.visualstudio.com/items (Product, Third Party Advisory)
github.com/jbenden/vscode-c-cpp-flylint/compare/v1.8.2...v1.9.0 (Patch, Third Party Advisory)
vuln.ryotak.me/advisories/16 (Third Party Advisory)

Frequently asked questions

What is CVE-2021-28953?: CVE-2021-28953 is a high-severity vulnerability in C\/c\+\+ Advanced Lint Project, classified under Uncontrolled Search Path Element. CVSS score: 7.8/10. Published 2021-03-21.
How severe is CVE-2021-28953?: High severity. CVSS v3 base score is 7.8 out of 10.