CVE-2021-26625
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 · uneditedInsufficient Verification of input Data leading to arbitrary file download and execute was discovered in Nexacro platform. This vulnerability is caused by an automatic update function that does not verify input data except version information. Remote attackers can use this incomplete validation logic to download and execute arbitrary malicious file.
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 confidenceThe Nexacro platform's automatic update function contains insufficient input validation, only checking version information before downloading and executing files. This allows remote attackers to supply arbitrary malicious files that the system will download and execute without proper integrity or authenticity verification.
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>= 17.0.0, < 17.1.3.700CVSS 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
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 if Nexacro platform is installedCheck common installation directories (e.g., C:\Program Files\Tobesoft\Nexacro or user-specific AppData folders) or search for nexacro*.exe files on the systemAffected if Nexacro platform software is present on the system
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Determine the installed Nexacro versionRight-click the main Nexacro executable, select Properties, and check the File Version field under the Details tab; alternatively, check any version.txt or version info file in the installation directoryAffected if The installed version falls within the range >= 17.0.0 and < 17.1.3.700
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Locate the automatic update configurationSearch the installation directory for update-related configuration files (such as UpdateInfo.xml, UpdateConfig.xml, or similar), or check the application's runtime configuration for update-related settingsAffected if Automatic update functionality is configured or enabled in the environment
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Verify update download source settingsOpen the update configuration file and examine the update server URL or source location settings to determine if they point to a trusted, controlled sourceAffected if The update source is not a trusted/controlled location or is externally configurable
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Confirm whether updates have been executedReview system logs, application logs, or the Nexacro runtime log directory for recent update download and execution events, noting any suspicious or unexpected update activityAffected if There are records of updates being downloaded from untrusted sources or unexpected file executions
The environment is affected if Nexacro platform version 17.0.0 through 17.1.3.699 is installed and the automatic update function is enabled, allowing potential download and execution of unverified files.
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.
dbcve · scoped17.1.3.700
Implement cryptographic verification of update files (e.g., digital signatures, checksums) and validate the source/origin of updates before execution. Restrict update download sources to trusted locations.
17.1.3.700 or later
- Upgrade Nexacro platform to version 17.1.3.700 or later
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation12.0 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-2021-26625 — 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-2021-26625 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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