CVE-2025-1252: connext Heap Overflow — Fix

Description

Heap-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.*.

Is your site exposed to CVE-2025-1252?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

7.1

HIGH

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

Weakness Type (CWE)

CWE-122 CWE-122

CWE-787 Out-of-bounds Write

Affected Products

Vendor	Product	Versions
rti	connext_professional	4.4 — 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-2025-1252

Frequently Asked Questions

What is CVE-2025-1252? +

Heap-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.*. It has a CVSS v3.1 base score of 7.1 (HIGH).

How severe is CVE-2025-1252? +

CVE-2025-1252 has a CVSS v3.1 score of 7.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-1252? +

CVE-2025-1252 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-2025-1252? +

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.

Related Vulnerabilities

CVE-2026-54000

osquery is a SQL powered operating system instrumentation, monitoring, and analytics framework. Prior to 5.23.1, on Windows, a local unprivileged …

CVE-2026-8997

vifm is vulnerable to a heap buffer overflow during the history merge process when saving the state file (vifminfo.json). This …

CVE-2026-15422

The illumos SCTP inbound path performs association lookup for INIT ACK chunks without adequately validating the address parameters carried in …

CVE-2026-15449

A time-of-check to time-of-use (TOCTOU) flaw in the illumos data-link pseudo-driver (dld) affects handling of the DLDIOC_GETMACPROP and DLDIOC_SETMACPROP ioctls …

CVE-2026-8484

A heap buffer overflow vulnerability exists in the Jansi JNI "ioctl()" wrapper due to a lack of size verification for …

CVE-2026-6210

A type confusion vulnerability in Qt SVG allows an attacker to cause an application crash via a crafted SVG image. …

CVE-2025-1252