What is CVE-2021-28130?

CVE-2021-28130 is a high-severity vulnerability in Drweb Security Space, classified under Uncontrolled Search Path Element. CVSS score: 7.8/10. Published 2021-09-24.

How severe is CVE-2021-28130?

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

Vulnerability in Drweb Security Space

CVE-2021-28130

Dr.Web Firewall 12.5.2.4160 on Windows incorrectly restricts applications signed by Dr.Web. A DLL for a custom payload within a legitimate binary (e.g., frwl_svc.exe) bypasses firewall filters.

Published 2021-09-24 · 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: 0.004 (28.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 28.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Drweb Security Space — versions 12.5.2.4160
Microsoft Windows

Weakness classification (CWE)

CWE-427 — Uncontrolled Search Path Element

References

news.drweb.ru/show/ (Vendor Advisory)
habr.com/ru/company/pm/blog/579328/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-28130?: CVE-2021-28130 is a high-severity vulnerability in Drweb Security Space, classified under Uncontrolled Search Path Element. CVSS score: 7.8/10. Published 2021-09-24.
How severe is CVE-2021-28130?: High severity. CVSS v3 base score is 7.8 out of 10.