Vulnerability in Cryptobox allows an authenticated user to trigger an account lockout

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Summary

CVECVE-2026-5794
StatePUBLISHED
AssignerTHA-PSIRT
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-28 19:37:47 UTC
Updated2026-04-28 20:10:23 UTC
DescriptionA vulnerability affecting the detailed versions of Cryptobox allows a legitimate user to prevent another to login by triggering an account lockout via sending a specially crafted request.

Risk And Classification

Primary CVSS: v4.0 4.9 MEDIUM from [email protected]

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-694 | CWE-694 CWE-694 Use of multiple resources with duplicate identifier

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary4.9MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/C...
4.0CNACVSS4.9MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Ercom Cryptobox affected 4.40.175 semver Not specified
CNA Ercom Cryptobox affected 4.37.237 4.38.0 semver Not specified

References

ReferenceSourceLinkTags
info.cryptobox.com/doc/v4.40/4.40.en [email protected] info.cryptobox.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Solutions

CNA: Upgrade to version 4.40.177 or above.

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