RDS is a widely deployed Windows service; authenticated RCE in Remote Desktop Services can lead to broad enterprise impact and disruption.
CVE-2026-58626
Authenticated use-after-free in Windows RDS enables remote code execution.
Is CVE-2026-58626 being exploited?
Not confirmed. CVE-2026-58626 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 0.91% probability of exploitation in the next 30 days.
How severe is CVE-2026-58626?
CVE-2026-58626 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-2026-58626?
Yes. A fix has been recorded for CVE-2026-58626. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-58626 affect?
CVE-2026-58626 affects Microsoft Windows Remote Desktop Services (RDS), Windows Server and Desktop OS versions with RDS enabled. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-58626?
Restrict/segment RDS access, enforce MFA, monitor RDS logs, apply Microsoft patch immediately when released.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated attacker can exploit a use-after-free in Remote Desktop Services to execute arbitrary code remotely, potentially leading to system compromise.
Immediate action required
- affected>= 10.0.19044.0 and < 10.0.19044.7548
- affected>= 10.0.19045.0 and < 10.0.19045.7548
- affected>= 10.0.26100.0 and < 10.0.26100.8875
- affected>= 10.0.26200.0 and < 10.0.26200.8875
- affected>= 10.0.28000.0 and < 10.0.28000.2525
- affected>= 10.0.20348.0 and < 10.0.20348.5386
- affected>= 10.0.26100.0 and < 10.0.26100.33158
- affected>= 10.0.26100.0 and < 10.0.26100.33158
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.