How severe is CVE-2025-26685?

CVE-2025-26685 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2025-26685 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-26685?

CVE-2025-26685 affects Microsoft Defender For Identity. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-26685?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-26685 have an EU (EUVD) identifier?

Yes. CVE-2025-26685 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-14436.

When was CVE-2025-26685 published?

CVE-2025-26685 was published on 2025-05-13 and last updated on 2026-06-17.

CVE-2025-26685

CVE-2025-26685 is a medium-severity vulnerability in Microsoft Defender For Identity with a CVSS 3.x base score of 6.5. 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-287.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-14436
Weakness: CWE-287
Affected product: Microsoft Defender For Identity
Published: 2025-05-13
Last modified: 2026-06-17

Description

Improper authentication in Microsoft Defender for Identity allows an unauthorized attacker to perform spoofing over an adjacent network.

Frequently asked questions

What is CVE-2025-26685?: Improper authentication in Microsoft Defender for Identity allows an unauthorized attacker to perform spoofing over an adjacent network.
How severe is CVE-2025-26685?: CVE-2025-26685 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2025-26685 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-26685?: CVE-2025-26685 affects Microsoft Defender For Identity. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-26685?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-26685 have an EU (EUVD) identifier?: Yes. CVE-2025-26685 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-14436.
When was CVE-2025-26685 published?: CVE-2025-26685 was published on 2025-05-13 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26685

Affected products (1)

cpe:2.3:a:microsoft:defender_for_identity:-:*:*:*:*:*:*:*

Other CWE-287 (Improper Authentication) vulnerabilities

CVE-2026-45480 — Critical (CVSS 10.0): Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-46389 — Critical (CVSS 10.0): UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS…
CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

Browse all CWE-287 (Improper Authentication) vulnerabilities →