Affects core enterprise infrastructure (Active Directory) enabling domain-wide privilege escalation; widely deployed.
CVE-2026-25177
AD DS privilege escalation via name restriction flaw.
Is CVE-2026-25177 being exploited?
Not confirmed. CVE-2026-25177 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 1.3% probability of exploitation in the next 30 days.
How severe is CVE-2026-25177?
CVE-2026-25177 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-25177?
Yes. A fix has been recorded for CVE-2026-25177. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-25177 affect?
CVE-2026-25177 affects Active Directory Domain Services. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-25177?
Patch immediately; verify and limit AD privileges.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authorized attacker can escalate to domain privileges by exploiting AD DS name restriction flaw, enabling lateral movement.
Patch when possible
- affected>= 10.0.14393.0 and < 10.0.14393.8957
- affected>= 10.0.17763.0 and < 10.0.17763.8511
- affected>= 10.0.19044.0 and < 10.0.19044.7058
- affected>= 10.0.19045.0 and < 10.0.19045.7058
- affected>= 10.0.22631.0 and < 10.0.22631.6783
- affected>= 10.0.22631.0 and < 10.0.22631.6783
- affected>= 10.0.26100.0 and < 10.0.26100.8037
- affected>= 10.0.26200.0 and < 10.0.26200.8037
- affected>= 10.0.28000.0 and < 10.0.28000.1719
- affected>= 6.2.9200.0 and < 6.2.9200.25973
- affected>= 6.3.9600.0 and < 6.3.9600.23074
- affected>= 6.3.9600.0 and < 6.3.9600.23074
- affected>= 6.2.9200.0 and < 6.2.9200.25973
- affected>= 10.0.14393.0 and < 10.0.14393.8957
- affected>= 10.0.14393.0 and < 10.0.14393.8957
- affected>= 10.0.17763.0 and < 10.0.17763.8511
- affected>= 10.0.17763.0 and < 10.0.17763.8511
- affected>= 10.0.20348.0 and < 10.0.20348.4893
- affected>= 10.0.25398.0 and < 10.0.25398.2207
- affected>= 10.0.26100.0 and < 10.0.26100.32522
- affected>= 10.0.26100.0 and < 10.0.26100.32522
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.