CVE-2026-7300
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 · uneditedBuffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in RTI Connext Professional (Web Integration Service) allows Filter Failure through Buffer Overflow.This issue affects Connext Professional: from 7.4.0 before 7.*, from 7.0.0 before 7.3.1.3, from 6.1.2 before 6.1.*.
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 confidenceRTI Connext Professional Web Integration Service contains a classic buffer overflow vulnerability where input size is not properly validated before copying to a fixed-size buffer. This allows an attacker to overflow the buffer and cause filter failure. The vulnerability exists in the Web Integration Service component of the DDS middleware.
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>= 6.1.2, < 7.4.0CVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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.
-
Confirm Web Integration Service is deployedInspect your environment for the presence of the Web Integration Service component, which is part of RTI Connext Professional DDS middleware. Check running processes, installed services, or documentation that lists deployed components.Affected if The Web Integration Service component is installed and running in your environment.
-
Identify installed RTI Connext Professional versionLocate the RTI Connext Professional installation and retrieve the version number. This is typically found in product documentation, installation metadata, or via product-specific commands or files within the installation directory.Affected if You cannot determine the version or the component is not found.
-
Compare version against affected rangeMatch your installed version against the vulnerable range: versions 6.1.2 and later, but earlier than 7.4.0. If your version is 7.4.0 or later, or earlier than 6.1.2, it is not within the affected range.Affected if The installed version falls within >= 6.1.2 and < 7.4.0.
-
Verify Web Integration Service is network-exposedReview network configuration to determine if the Web Integration Service is accessible over the network. Check firewall rules, bindings, or listener configurations.Affected if The Web Integration Service is network-accessible and your version is within the affected range.
You are affected if the Web Integration Service component is running and your RTI Connext Professional version is between 6.1.2 and 7.4.0 exclusive.
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 data7.4.0
Update RTI Connext Professional to version 7.3.1.3 or later, or to version 6.1.* or later, or the latest 7.* release that includes the patch. If patching is not immediately feasible, restrict network access to the Web Integration Service and implement input validation at perimeter controls.
- Consultation3.0 h
- Implementation4.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,416.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-7300 — 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-2026-7300 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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
- No spam, self-promotion, credentials, or personal data