CVE-2020-35664
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 Acronis Cyber Protect before 15 Update 1 build 26172. There is cross-site scripting (XSS) in the console.
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 confidenceAcronis Cyber Protect versions prior to 15 Update 1 build 26172 contain a cross-site scripting (XSS) vulnerability in the management console. The vulnerability allows an attacker to inject malicious scripts through the console interface, potentially compromising other users or administrators viewing the affected content.
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< 15= 15CVSS 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
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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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Check the installed Acronis Cyber Protect versionLocate the version information in the management console's About section, or check the installed programs list on the system. Compare the version number and build number against the affected ranges.Affected if The installed version is any release of version 15 prior to Update 1 build 26172, or any version below 15.
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Verify the management console is accessibleConfirm that the Acronis management console web interface is enabled and reachable, typically on port 9877 or 9878 by default.Affected if The management console is exposed and the version check shows an affected release.
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Review console logs for suspicious script injection attemptsExamine the management console logs and server logs for unusual script tags, encoded payloads, or unexpected JavaScript references in user input fields.Affected if Log entries contain XSS payloads or evidence of injection attempts against the console interface.
A user is affected if they are running Acronis Cyber Protect version 15 prior to build 26172 (or any version below 15) with the management console enabled and accessible.
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 data15
Upgrade to Acronis Cyber Protect 15 Update 1 (build 26172) or later to obtain the security fix. Until patched, limit console access to trusted personnel only.
- Consultation2.0 h
- Implementation4.0 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 $3,088.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-35664 — 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-2020-35664 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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