CVE-2020-25770
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 out-of-bounds read information disclosure vulnerabilities in Trend Micro Apex One may allow a local attacker to disclose sensitive information to an unprivileged account on vulnerable installations of the product. An attacker must first obtain the ability to execute low-privileged code on the target in order to exploit these vulnerabilities. The subs affected in this vulnerability makes it unique compared to similar CVEs such as CVE-2020-24564 and CVE-2020-25771.
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 out-of-bounds read vulnerability in Trend Micro Apex One allows a local attacker who has already obtained low-privileged code execution to disclose sensitive information to unprivileged accounts on vulnerable installations.
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= 2019= saasCVSS 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
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/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 installed Apex One versionOpen the Apex One console or use the product's version check utility (typically via Help > About or a versioninfo command in the product directory). Compare the displayed version to 2019 or confirm if it is the SaaS deployment model.Affected if The installed version is Trend Micro Apex One 2019 or the SaaS version.
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Confirm product edition is affectedVerify the specific Apex One edition in use through the management console or installed packages. The vulnerability affects the on-premises 2019 release and all SaaS deployments.Affected if Running Apex One 2019 (any build) or the SaaS-hosted version.
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Verify low-privileged user access existsReview local user accounts and permissions on the system. Check if any non-administrative accounts exist that could potentially interact with the Apex One installation directory or components.Affected if Unprivileged local accounts are present on the system (this is the prerequisite condition for exploitation).
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Check for suspicious process accessReview Apex One process access logs or system audit logs for any unusual read operations targeting memory regions outside expected buffers. Look for the Apex One service process (e.g., tmecomm.exe or related components) exhibiting abnormal memory access patterns.Affected if Apex One processes show out-of-bounds memory read attempts in logs, indicating the vulnerable code path is being triggered.
You are affected if running Trend Micro Apex One version 2019 or the SaaS version, and an attacker with low-privileged local access could potentially trigger the out-of-bounds read in the security product's components.
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 the vendor security update for Trend Micro Apex One. Limit local access and enforce least-privilege principles to reduce the attack surface for initial low-privileged code execution.
- Consultation3.0 h
- Implementation2.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-25770 — 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-2020-25770 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
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