CVE-2025-1253: connext Buffer Overflow — Fix

Description

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'), Stack-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 4.5c before 5.2.*.

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CVSS v3.1 Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-120 CWE-120

CWE-121 CWE-121

Affected Products

Vendor	Product	Versions
rti	connext_professional	4.5c — 5.2.3
rti	connext_professional	5.3.0 — 5.3.1.45
rti	connext_professional	6.0.0 — 6.0.1.40
rti	connext_professional	6.1.0 — 6.1.2.23
rti	connext_professional	7.0.0 — 7.3.0.7
rti	connext_professional	7.4.0 — 7.5.0

References

Advisories & Patches

https://www.rti.com/vulnerabilities/#cve-2025-1253

Frequently Asked Questions

What is CVE-2025-1253? +

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'), Stack-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 4.5c before 5.2.*. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2025-1253? +

CVE-2025-1253 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-1253? +

CVE-2025-1253 affects products from rti, specifically: connext_professional. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-1253? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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