CVE-2015-7303
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 · uneditedUse-after-free vulnerability in the Update Manager service in Avira Management Console allows remote attackers to execute arbitrary code via a large header.
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 · moderate confidenceA use-after-free vulnerability exists in the Update Manager service of Avira Management Console. The vulnerability is triggered by sending a large header to the service, causing memory to be accessed after it has been freed, which allows remote attackers to execute arbitrary code with the privileges of the Update Manager service.
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 dataall versionsCVSS 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
- Low
- Authentication
- None
- Confidentiality
- Complete
- Integrity
- Complete
- Availability
- Complete
AV:N/AC:L/Au:N/C:C/I:C/A:C
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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Verify Avira Management Console installationCheck for the presence of Avira Management Console installation directory (typically C:\Program Files\Avira\Management Console or similar) or look in Windows Add/Remove Programs for Avira Management Console entriesAffected if Avira Management Console is installed on the system
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Identify the Update Manager serviceOpen Windows Services console (services.msc) and look for a service named 'Avira Update Manager' or 'Avira Management Console Update Service', or run 'sc query' command to enumerate services containing 'Avira' and 'Update'Affected if The Update Manager service exists on the system
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Check if the Update Manager service is runningIn Services console, check the Status column for the Update Manager service, or run 'sc query [service_name]' to check if the service state is RUNNINGAffected if The Update Manager service is currently running
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Determine network exposure of the Update Manager serviceRun 'netstat -an' or use TCPview to check for listening ports associated with Avira (typically ports in the 8560-8569 range for Management Console), or check firewall rules for inbound allowed ports related to Avira Update ManagerAffected if The Update Manager service is listening on a network-accessible port and accepts incoming connections
If Avira Management Console is installed with the Update Manager service running and exposed on the network, the system is affected by this vulnerability.
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 dataApply vendor patches when available. Until then, restrict network access to the Update Manager service, disable the service if not required, and monitor for suspicious large-header requests.
- Consultation6.0 h
- Implementation8.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2015-7303 — 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-2015-7303 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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