Cyber Resilience

CVE-2023-27172

CriticalPublic PoC

Published: 20 December 2023

Published
20 December 2023
Modified
06 May 2025
KEV Added
Patch
CVSS Score v3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS Score 0.0009 24.8th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-27172 is a critical-severity Improper Restriction of Excessive Authentication Attempts (CWE-307) vulnerability in Xpand-It Write-Back Manager. Its CVSS base score is 9.1 (Critical).

Operationally, ranked at the 24.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

Xpand IT Write-back Manager v2.3.1 uses weak secret keys to sign JWT tokens. This allows attackers to easily obtain the secret key used to sign JWT tokens via a bruteforce attack.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

xpand-it
write-back manager
2.3.1

Mitigating Controls

Likely Mitigating Controls AI

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.

addresses: CWE-307

This control directly enforces limits on consecutive invalid logon attempts and automatic response (e.g., lockout) to prevent brute-force exploitation of authentication mechanisms.

addresses: CWE-307

Specific conditions can include excessive failed attempts, triggering stronger authentication that restricts brute-force exploitation.

References