What is CVE-2020-37095?

CVE-2020-37095 is a critical-severity vulnerability in Cyberoam Authentication Client, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-02-07.

How severe is CVE-2020-37095?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Cyberoam Authentication Client

CVE-2020-37095

Cyberoam Authentication Client 2.1.2.7 contains a buffer overflow vulnerability that allows remote attackers to execute arbitrary code by overwriting Structured Exception Handler (SEH) memory. Attackers can craft a malicious input in the 'Cyberoam Server Address' field to trigger a bind TCP shell on port 1337 with system-level access.

Vulnerability class: Buffer Overflow

Published 2026-02-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (51.8th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000

Affected products

Cyberoam Authentication Client — versions 2.1.2.7

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

www.exploit-db.com/exploits/48148 (exploit)
cyberoam-general-authentication-client.software.informer.com/2.1/ (product)
www.vulncheck.com/advisories/cyberoam-authentication-client-buffer-overflow-seh (third-party-advisory)

Frequently asked questions

What is CVE-2020-37095?: CVE-2020-37095 is a critical-severity vulnerability in Cyberoam Authentication Client, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-02-07.
How severe is CVE-2020-37095?: Critical severity. CVSS v3 base score is 9.8 out of 10.