How severe is CVE-2025-14543?

CVE-2025-14543 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.

Is CVE-2025-14543 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-14543?

CVE-2025-14543 affects Rti Connext Professional. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-14543?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-14543 have an EU (EUVD) identifier?

Yes. CVE-2025-14543 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209595.

When was CVE-2025-14543 published?

CVE-2025-14543 was published on 2026-04-30 and last updated on 2026-06-17.

CVE-2025-14543

CVE-2025-14543 is a critical-severity vulnerability in Rti Connext Professional with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-611.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v4: 8.8
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-209595
Weakness: CWE-611
Affected product: Rti Connext Professional
Published: 2026-04-30
Last modified: 2026-06-17

Description

Improper Restriction of XML External Entity Reference vulnerability in RTI Connext Professional (Core Libraries) allows Serialized Data External Linking.This issue affects Connext Professional: from 7.4.0 before 7.7.0, from 7.0.0 before 7.3.1.1, from 6.1.0 before 6.1.*, from 6.0.0 before 6.0.*, from 5.3.0 before 5.3.*, from 4.3x before 5.2.*.

Frequently asked questions

What is CVE-2025-14543?: Improper Restriction of XML External Entity Reference vulnerability in RTI Connext Professional (Core Libraries) allows Serialized Data External Linking.This issue affects Connext Professional: from 7.4.0 before 7.7.0, from 7.0.0 before 7.3.1.1, from 6.1.0 before 6.1.*, from 6.0.0 before 6.0.*, from 5.3.0 before 5.3.*, from 4.3x before 5.2.*.
How severe is CVE-2025-14543?: CVE-2025-14543 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.
Is CVE-2025-14543 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-14543?: CVE-2025-14543 affects Rti Connext Professional. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-14543?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-14543 have an EU (EUVD) identifier?: Yes. CVE-2025-14543 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209595.
When was CVE-2025-14543 published?: CVE-2025-14543 was published on 2026-04-30 and last updated on 2026-06-17.

References

https://www.rti.com/vulnerabilities/#cve-2025-14543

Affected products (1)

cpe:2.3:a:rti:connext_professional:*:*:*:*:*:*:*:*

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