CVE-2025-46736

Q: How do I fix CVE-2025-46736?

Upgrade umbraco cms to 13.8.1 or later.

Q: Is CVE-2025-46736 being actively exploited?

Not that we know of. CVE-2025-46736 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.36% is the estimated probability that it will be exploited in the next 30 days. That is higher than 29% of all scored CVEs.

Q: How severe is CVE-2025-46736?

CVE-2025-46736 has a CVSS v3 base score of 5.3, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2025-46736 affect?

Published advisories record a fix for umbraco cms (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

MEDIUM

5.3

CVSS v3

NVD

Description

Umbraco is a free and open source .NET content management system. Prior to versions 10.8.10 and 13.8.1, based on an analysis of the timing of post login API responses, it's possible to determine whether an account exists. The issue is patched in versions 10.8.10 and 13.8.1. No known workarounds are available.

CWE-204

How to fix

Remediation Available

umbraco cmsNVD

Affected:>= 10.9.0, < 13.8.1Fixed in:13.8.1CVE-2025-46736derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.36%probability of exploitation in 30 days

29thpercentile

Low risk: more likely to be exploited than 29% of all known CVEs.

References

Patch2

Vendor Advisory1

github.com

Related Vulnerabilities

Other CWE-204 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2022-41697	Medium	5.3	20%	-	-
CVE-2016-9499	Medium	5.3	7.8%	-	Fix
CVE-2019-19030	Medium	5.3	1.9%	-	Fix
CVE-2022-0564	Medium	5.3	1.4%	-	Fix
CVE-2021-20049	High	7.5	1.3%	-	Fix
CVE-2021-39189	Medium	5.3	1.3%	-	Fix

Common questions

How do I fix CVE-2025-46736?

Upgrade umbraco cms to 13.8.1 or later.

Is CVE-2025-46736 being actively exploited?

Not that we know of. CVE-2025-46736 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.36% is the estimated probability that it will be exploited in the next 30 days. That is higher than 29% of all scored CVEs.

How severe is CVE-2025-46736?

CVE-2025-46736 has a CVSS v3 base score of 5.3, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2025-46736 affect?

Published advisories record a fix for umbraco cms (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-09-03.