Is CVE-2020-37168 in the CISA KEV catalog?

No. CVE-2020-37168 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-37168?

CVE-2020-37168 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2020-37168?

CVE-2020-37168 has an EPSS score of 0.25% (16th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2020-37168?

No published fix for CVE-2020-37168 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2020-37168

CRITICAL

9.8

CVSS v3

NVD

Description

Ecommerce Systempay 1.0 contains a weak cryptographic implementation vulnerability that allows attackers to brute force the 16-character production secret key used for payment signature generation. Attackers can extract payment form data and signatures from POST requests to the payment endpoint, then use SHA1 hash comparison to iteratively test key candidates until discovering the correct production key, enabling them to forge valid payment signatures and manipulate transaction amounts.

CWE-328

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

0.25%probability of exploitation in 30 days

16thpercentile

Low risk: more likely to be exploited than 16% of all known CVEs.

References

Other references4

Related Vulnerabilities

Other CWE-328 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2004-2761	Critical	9.8	9.9%	-	-
CVE-2024-54143	Unscored	-	1.9%	-	-
CVE-2022-3433	Medium	6.5	0.7%	-	Fix
CVE-2022-29249	High	7.5	0.7%	-	-
CVE-2023-2900	Low	3.7	0.7%	-	-
CVE-2023-46233	Critical	9.1	0.6%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.