CVE-2020-21452
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 · uneditedAn issue was discovered in uniview ISC2500-S. This is an upload vulnerability where an attacker can upload malicious code via /Interface/DevManage/EC.php?cmd=upload
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 confidenceAn unauthenticated file upload vulnerability in Uniview ISC2500-S devices allows remote attackers to upload malicious code via the /Interface/DevManage/EC.php endpoint with the upload command parameter. The lack of proper input validation enables arbitrary file upload, potentially leading to remote code execution on the affected device.
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
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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 the device modelCheck the device label, web interface, or SNMP/sysinfo for model number 'ISC2500-S' or 'Isc2500 S'Affected if Device is not a Uniview ISC2500-S variant (not applicable)
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Confirm firmware versionAccess the device web interface or check via SNMP/telnet for firmware version informationAffected if Device is running Uniview ISC2500-S firmware (all versions are affected per vendor advisory)
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Check management interface exposureDetermine if the device HTTP/HTTPS management interface is accessible from the network by attempting to reach the device IP on common management ports (80, 443, 8080)Affected if Management interface is network-accessible from untrusted networks
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Test vulnerable endpoint accessibilitySend an HTTP request to /Interface/DevManage/EC.php on the device and observe if it responds (even with error)Affected if The /Interface/DevManage/EC.php endpoint is reachable and responds to requests
If the device is a Uniview ISC2500-S model with any firmware version and its management interface (containing the EC.php endpoint) is accessible from the network, the environment 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 dataRestrict network access to the management interface, implement WAF rules to validate file uploads, and apply vendor-provided patches when available. If immediate patching is not possible, disable or block access to the vulnerable endpoint.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-21452 — 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-2020-21452 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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