Potential stack overflow when using XML configuration file referencing environment variables
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in RTI Connext Professional (Routing Service, Recording Service, Queuing Service, Observability Collector Service, Cloud Discovery Service) allows Buffer Overflow via Environment Variables.This issue affects Connext Professional: from 7.0.0 before 7.3.0.5, from 6.1.0 before 6.1.2.21, from 6.0.0 before 6.0.*, from 5.3.0 before 5.3.1.45.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for help- Published
- Dec 13, 2024
- Updated
- Jun 17, 2026
- EPSS
- 0.3% · 22th percentile
- CWE
- CWE-120
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Report tools
Action score
33
Monitor
Low priority for now.
- CVSS
- 33 / 40 · 8.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.3%
CISA SSVC decision
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · RTI
- 8.3
- NVD has not scored this yet; the score shown is the CNA’s.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| rti | connext professional | cpe:2.3:a:rti:connext_professional |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- rti connext professional5.3.0 and later · before 5.3.1.45
- rti connext professional6.0.0 and later · before 6.0.1.40
- rti connext professional6.1.0 and later · before 6.1.2.21
- rti connext professional7.0.0 and later · before 7.3.0.5
Versions reported by the vendor
Affected version ranges reported by the assigning authority (RTI). Independent of NVD's CPE analysis and usually ahead of it.
RTI Connext Professional
- 7.0.0 and later · before 7.3.0.5affected
- 6.1.0 and later · before 6.1.2.21affected
- 6.0.0 and later · before 6.0.1.40affected
- 5.3.0 and later · before 5.3.1.45affected
Same product
rti: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-7866Stack-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) allows Overflow Buffers.40Plan
- CVE-2021-38435RTI Connext DDS Professional and Connext DDS Secure Incorrect Calculation of Buffer Size39Monitor
- CVE-2026-18461Use of Externally-Controlled Format String vulnerability in RTI Connext Professional (Core Libraries) allows Format String Injection.36Monitor
- CVE-2026-3894Out-of-bounds Read vulnerability in RTI Connext Professional (Core Libraries) allows Overread Buffers.36Monitor
- CVE-2026-2467Heap-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) allows Overflow Variables and Tags.36Monitor
- CVE-2024-52057Potential arbitrary SQL query execution in Queuing Service while parsing malicious remote commands or configuration files36Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2024-520610 days apartPotential stack buffer overflow when parsing an XML type33Monitor
- CVE-2024-520630 days apartPotential stack buffer write overflow in Connext applications while parsing malicious XML types document33Monitor
- CVE-2024-520660 days apartPotential stack corruption in Routing Service when using a malicious XML configuration document33Monitor
- CVE-2024-25724206 days apartIn RTI Connext Professional 5.3.1 through 6.1.0 before 6.1.1, a buffer overflow in XML parsing from Routing Service, Recording Service, Queu29Monitor
- CVE-2024-520590 days apartBuffer Copy without Checking Size of Input ('Classic Buffer Overflow'), Heap-based Buffer Overflow, Integer Overflow or Wraparound vulnerability in RTI Connext 27Monitor
- CVE-2024-520640 days apartPotential stack buffer write overflow in Connext applications while parsing malicious license file27Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- Integrity
- Availability
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- X
Weakness class (CWE)
CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
nvd-secondary
Root cause
When data is copied, the source length is not compared with the size of the destination buffer. Excess data overwrites adjacent memory.
The bug in code
The whole CWE-120 classA representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.
Vulnerable
char buf[256];memcpy(buf, pkt->data, pkt->len);Fixed
char buf[256];if (pkt->len > sizeof(buf)) { return -EINVAL;}memcpy(buf, pkt->data, pkt->len);Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Overflow BuffersCAPEC-100likelihood: High · Very High
- Client-side Injection-induced Buffer OverflowCAPEC-14likelihood: Medium · High
- Filter Failure through Buffer OverflowCAPEC-24likelihood: High · High
- MIME ConversionCAPEC-42likelihood: High · High
- Overflow Binary Resource FileCAPEC-44likelihood: High · Very High
- Buffer Overflow via Symbolic LinksCAPEC-45likelihood: High · High
- Overflow Variables and TagsCAPEC-46likelihood: High · High
ATT&CK techniques
—
Change log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.