How severe is CVE-2025-5309?

CVE-2025-5309 has a CVSS 3.x base score of 9.8, 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 high, and availability high.

Is CVE-2025-5309 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-5309?

CVE-2025-5309 primarily affects Beyondtrust Privileged Remote Access. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-5309?

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-2025-5309 have an EU (EUVD) identifier?

Yes. CVE-2025-5309 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18420.

When was CVE-2025-5309 published?

CVE-2025-5309 was published on 2025-06-16 and last updated on 2026-06-17.

CVE-2025-5309

CVE-2025-5309 is a critical-severity vulnerability in Beyondtrust Privileged Remote Access with a CVSS 3.x base score of 9.8. 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-94.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 8.6
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-18420
Weakness: CWE-94
Affected product: Beyondtrust Privileged Remote Access
Published: 2025-06-16
Last modified: 2026-06-17

Description

The chat feature within Remote Support (RS) and Privileged Remote Access (PRA) is vulnerable to a Server-Side Template Injection vulnerability which can lead to remote code execution.

Frequently asked questions

What is CVE-2025-5309?: The chat feature within Remote Support (RS) and Privileged Remote Access (PRA) is vulnerable to a Server-Side Template Injection vulnerability which can lead to remote code execution.
How severe is CVE-2025-5309?: CVE-2025-5309 has a CVSS 3.x base score of 9.8, 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 high, and availability high.
Is CVE-2025-5309 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-5309?: CVE-2025-5309 primarily affects Beyondtrust Privileged Remote Access. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-5309?: 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-2025-5309 have an EU (EUVD) identifier?: Yes. CVE-2025-5309 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18420.
When was CVE-2025-5309 published?: CVE-2025-5309 was published on 2025-06-16 and last updated on 2026-06-17.

References

https://www.beyondtrust.com/trust-center/security-advisories/bt25-04

Affected products (4)

cpe:2.3:a:beyondtrust:privileged_remote_access:*:*:*:*:*:*:*:*
cpe:2.3:a:beyondtrust:privileged_remote_access:25.1.1:*:*:*:*:*:*:*
cpe:2.3:a:beyondtrust:remote_support:*:*:*:*:*:*:*:*
cpe:2.3:a:beyondtrust:remote_support:25.1.1:*:*:*:*:*:*:*

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