Incorrect Memory Allocation in OpenSSL-Based Session Module in AxxonSoft Axxon One (C-Werk)

Summary

CVECVE-2025-10225
StatePUBLISHED
AssignerAxxonSoft
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-09-10 13:15:36 UTC
Updated2026-09-26 00:10:00 UTC
DescriptionImproper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) in the OpenSSL-based session module in AxxonSoft Axxon One (C-Werk) 2.0.6 and earlier on Windows allows a remote attacker under high load conditions to cause application crashes or unpredictable behavior via triggering memory reallocation errors when handling expired session keys.

Risk And Classification

Primary CVSS: v4.0 8.7 HIGH from 15ede60e-6fda-426e-be9c-e788f151a377

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/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

EPSS: 0.003990000 probability, percentile 0.315320000 (date 2026-09-27)

Problem Types: CWE-119 | CWE-119 CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer


VersionSourceTypeScoreSeverityVector
4.015ede60e-6fda-426e-be9c-e788f151a377Secondary8.7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/C...
4.0CNACVSS8.7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
3.115ede60e-6fda-426e-be9c-e788f151a377Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNACVSS7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
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:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/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

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Axxonsoft Axxon One All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA AxxonSoft AxxonOne C-Werk affected 2.0.6 semver Windows

References

ReferenceSourceLinkTags
www.axxonsoft.com/legal/axxonsoft-vulnerability-disclosure-policy/security-advi... 15ede60e-6fda-426e-be9c-e788f151a377 www.axxonsoft.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Reported internally during AxxonSoft performance and fault-injection testing. (en)

Additional Advisory Data

Solutions

CNA: Upgrade to Axxon One (C-Werk) with OpenSSL 3.0.13 or later, where session key management logic was refactored to avoid unsafe memory reallocations.

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