What is CVE-2021-35508?

CVE-2021-35508 is a high-severity vulnerability in Terarecon Aquariusnet, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 8.8/10. Published 2021-09-01.

How severe is CVE-2021-35508?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Terarecon Aquariusnet

CVE-2021-35508

NMSAccess32.exe in TeraRecon AQNetClient 4.4.13 allows attackers to execute a malicious binary with SYSTEM privileges via a low-privileged user account. To exploit this, a low-privileged user must change the service configuration or overwrite the binary service.

Published 2021-09-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.015 (73.0th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 73.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000

Affected products

Terarecon Aquariusnet — versions 4.4.13

Weakness classification (CWE)

CWE-732 — Incorrect Permission Assignment for Critical Resource

References

www.linkedin.com/pulse/cve-2021-35508-privilege-escalation-via-weak-windows-mar… (Exploit, Third Party Advisory)
terarecon.sharefile.com/d-s05c8b7792f354a2d8115789a02449c4a (Product, Third Party Advisory)

Frequently asked questions

What is CVE-2021-35508?: CVE-2021-35508 is a high-severity vulnerability in Terarecon Aquariusnet, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 8.8/10. Published 2021-09-01.
How severe is CVE-2021-35508?: High severity. CVSS v3 base score is 8.8 out of 10.