How severe is CVE-2020-8591?

CVE-2020-8591 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-8591 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-8591?

CVE-2020-8591 affects Eginnovations Eg Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-8591?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2020-8591 published?

CVE-2020-8591 was published on 2020-02-03 and last updated on 2026-06-17.

CVE-2020-8591

CVE-2020-8591 is a critical-severity vulnerability in Eginnovations Eg Manager with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Eginnovations Eg Manager
Published: 2020-02-03
Last modified: 2026-06-17

Description

eG Manager 7.1.2 allows authentication bypass via a com.egurkha.EgLoginServlet?uname=admin&upass=&accessKey=eGm0n1t0r request.

Frequently asked questions

What is CVE-2020-8591?: eG Manager 7.1.2 allows authentication bypass via a com.egurkha.EgLoginServlet?uname=admin&upass=&accessKey=eGm0n1t0r request.
How severe is CVE-2020-8591?: CVE-2020-8591 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-8591 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-8591?: CVE-2020-8591 affects Eginnovations Eg Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-8591?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-8591 published?: CVE-2020-8591 was published on 2020-02-03 and last updated on 2026-06-17.

References

https://pyaefromucsp.blogspot.com/2020/02/eg-manager-v712improper-access-control_3.html

Affected products (1)

cpe:2.3:a:eginnovations:eg_manager:7.1.2:*:*:*:*:*:*:*

More vulnerabilities in Eginnovations Eg Manager

CVE-2020-8592 — Critical (CVSS 9.8): eG Manager 7.1.2 allows SQL Injection via the user parameter to com.eg.LoginHelperServlet (aka the Forgot Password…
CVE-2022-29594 — High (CVSS 7.8): eG Agent before 7.2 has weak file permissions that enable escalation of privileges to SYSTEM.

All CVEs affecting Eginnovations Eg Manager →

Other CWE-287 (Improper Authentication) vulnerabilities

CVE-2026-45480 — Critical (CVSS 10.0): Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-46389 — Critical (CVSS 10.0): UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS…
CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

Browse all CWE-287 (Improper Authentication) vulnerabilities →