CVE-2015-8331
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedThe Operation and Maintenance Unit (OMU) in Huawei VCN500 with software before V100R002C00SPC200 does not properly invalidate the session ID when an "abnormal exit" occurs, which allows remote attackers to conduct replay attacks via the session ID.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceThe Operation and Maintenance Unit (OMU) in Huawei VCN500 video surveillance platform fails to invalidate session IDs upon abnormal exit, allowing attackers to reuse (replay) valid session IDs to impersonate legitimate users. This is a session management flaw in pre-V100R002C00SPC200 software versions.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= v100r002c00spc200b010CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- None
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify VCN500 software versionAccess the VCN500 management interface or system console and retrieve the current software version information. This is typically found in system settings, about page, or via CLI command 'display version' or similar.Affected if The displayed version is v100r002c00spc200b010 or any version earlier than V100R002C00SPC200
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Verify OMU component statusCheck if the Operation and Maintenance Unit (OMU) module is installed and running on the VCN500 platform. This can be done through the platform's module status interface or via system diagnostic commands.Affected if OMU is present and active on the system
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Confirm session management configurationExamine the session management settings or logs related to the OMU component, specifically looking for session ID handling behavior upon abnormal exit or disconnection events.Affected if Session IDs remain valid or are not invalidated after abnormal termination events
A system is affected if the VCN500 software version is v100r002c00spc200b010 or any pre-V100R002C00SPC200 version with the OMU component enabled and session IDs persist after abnormal exit.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpgrade Huawei VCN500 software to version V100R002C00SPC200 or later to ensure proper session ID invalidation on abnormal exit events.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,800.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2015-8331 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2015-8331 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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