CVE-2025-1252
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 · uneditedHeap-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) allows Overflow Variables and Tags.This issue affects Connext Professional: from 7.4.0 before 7.5.0, from 7.0.0 before 7.3.0.7, from 6.1.0 before 6.1.2.23, from 6.0.0 before 6.0.1.42, from 5.3.0 before 5.3.*, from 4.4d before 5.2.*.
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 confidenceHeap-based buffer overflow vulnerability in RTI Connext Professional Core Libraries allows overflow of variables and tags. This flaw can be exploited by specially crafted network messages to corrupt heap memory, potentially leading to arbitrary code execution or denial of service.
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>= 4.4, <= 5.2.3>= 5.3.0, <= 5.3.1.45>= 6.0.0, <= 6.0.1.40>= 6.1.0, < 6.1.2.23>= 7.0.0, < 7.3.0.7>= 7.4.0, < 7.5.0CVSS 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
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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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Locate RTI Connext installationSearch common installation directories such as /opt/rti, C:\Program Files\RTI, or /usr/local/rti. Look for directories named 'connext' or 'RTI Connext'. Use 'find /opt -name '*connext*' 2>/dev/null' on Linux or check Program Files on Windows.Affected if RTI Connext is found in the system
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Identify installed Connext versionCheck for a version file in the installation directory, such as 'version.txt' or 'rti_version.h'. Alternatively, run 'rtiddsgen -version' if available, or examine the shared libraries (libnddscore.so on Linux, nddscore.dll on Windows) which often embed version info in their metadata.Affected if The installed version falls within any of the affected ranges: 4.4 to 5.2.3, 5.3.0 to 5.3.1.45, 6.0.0 to 6.0.1.40, 6.1.0 to 6.1.2.22, 7.0.0 to 7.3.0.6, or 7.4.0 to 7.4.x
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Confirm Core Libraries are in useIdentify processes or applications using RTI Connext by checking for linked libraries: libnddscore.so, libnddsc.so on Linux, or nddscore.dll, nddsc.dll on Windows. Use 'ldd <application>' or examine running processes that communicate via DDS middleware.Affected if Applications link against RTI Connext libraries and use DDS publish/subscribe functionality
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Assess network exposure of Connext endpointsReview firewall rules and network configuration to determine if DDS ports (typically 7400-7401 for RTI Connext discovery and user data) are exposed to untrusted networks. Check application configuration files (*.xml) for <participant> definitions with enabled transport plugins.Affected if Connext participants are reachable from network segments that contain untrusted or external systems, increasing exploitability
You are affected if RTI Connext Professional is installed and the installed version falls within the affected ranges listed, especially if the DDS networking components are exposed to untrusted network traffic.
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 · scoped6.1.2.237.3.0.77.5.0
Upgrade to the patched versions (7.5.0, 7.3.0.7, 6.1.2.23, 6.0.1.42, or later 5.3.x/5.2.x releases). If immediate patching is not feasible, restrict network access to Connext endpoints and implement input validation at the application layer.
6.1.2.23 (for 6.1.x); 6.0.1.42 (for 6.0.x); latest 5.3.x (for 5.3.x); latest 5.2.x (for 4.4d-5.2.x); 7.3.0.7 (for 7.0.x); 7.5.0 (for 7.4.x)
- 1. Identify the currently installed RTI Connext Professional version by checking the installation directory or using the version check utility.
- 2. Determine which version branch your current installation belongs to (4.x, 5.x, 6.x, or 7.x).
- 3. For version 6.1.0 to < 6.1.2.23: Upgrade to version 6.1.2.23 or later.
- 4. For version 6.0.0 to < 6.0.1.42: Upgrade to version 6.0.1.42 or later.
- 5. For version 5.3.0 to < 5.3.x: Upgrade to version 5.3.x (latest in the 5.3 series).
- 6. For version 4.4d to < 5.2.x: Upgrade to version 5.2.x (latest in the 5.2 series) or later.
- 7. For version 7.x: If on 7.0.0 to < 7.3.0.7, upgrade to 7.3.0.7 or later; if on 7.4.0 to < 7.5.0, upgrade to 7.5.0 or later.
- 8. Download the appropriate fixed version from the RTI customer portal at www.rti.com or your authorized distribution channel.
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing12.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-1252 — 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-2025-1252 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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- Version or environment caveats, and links to real fixes
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