Cyber Posture

CVE-2020-37168

CriticalPublic PoC

Published: 13 May 2026

Published
13 May 2026
Modified
13 May 2026
KEV Added
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Patch
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CVSS Score 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0004 11.7th percentile
Risk Priority 20 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2020-37168 is a critical-severity Use of Weak Hash (CWE-328) vulnerability in Systempay (inferred from references). Its CVSS base score is 9.8 (Critical).

Operationally, ranked at the 11.7th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

Threat & Defense Details

Likely Mitigating ControlsAI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-13 Cryptographic Protection
addresses: CWE-328

Requires appropriate hash functions for cryptographic uses, preventing reliance on weak hashes.

SI-2 Flaw Remediation
addresses: CWE-328

Security updates supplant weak hashing algorithms with stronger alternatives before attackers can exploit the original weakness.

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,…

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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.

Deeper analysisAI

Automated synthesis unavailable for this CVE.

Details

CWE(s)
CWE-328

Affected Products

Systempay
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inferred from references and description; NVD did not file a CPE for this CVE

References