How severe is CVE-2025-61258?

CVE-2025-61258 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-61258 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-61258?

CVE-2025-61258 affects Outsystems Platform Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-61258?

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

Does CVE-2025-61258 have an EU (EUVD) identifier?

Yes. CVE-2025-61258 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-202263.

When was CVE-2025-61258 published?

CVE-2025-61258 was published on 2025-12-09 and last updated on 2026-06-17.

CVE-2025-61258

CVE-2025-61258 is a high-severity vulnerability in Outsystems Platform Server with a CVSS 3.x base score of 7.5. 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-444.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-202263
Weakness: CWE-444
Affected product: Outsystems Platform Server
Published: 2025-12-09
Last modified: 2026-06-17

Description

Outsystems Platform Server 11.18.1.37828 allows attackers to cause a denial of service via a crafted content-length value mismatching the body length. NOTE: the Supplier indicates that they are unable to reproduce this.

Frequently asked questions

What is CVE-2025-61258?: Outsystems Platform Server 11.18.1.37828 allows attackers to cause a denial of service via a crafted content-length value mismatching the body length. NOTE: the Supplier indicates that they are unable to reproduce this.
How severe is CVE-2025-61258?: CVE-2025-61258 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-61258 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-61258?: CVE-2025-61258 affects Outsystems Platform Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-61258?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-61258 have an EU (EUVD) identifier?: Yes. CVE-2025-61258 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-202263.
When was CVE-2025-61258 published?: CVE-2025-61258 was published on 2025-12-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:outsystems:platform_server:11.18.1.37828:*:*:*:*:*:*:*

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