Remote code execution via RRAS; Windows core networking component with broad deployment.
CVE-2026-25172
RRAS overflow enables network-based remote code execution on Windows.
Is CVE-2026-25172 being exploited?
Not confirmed. CVE-2026-25172 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 0.90% probability of exploitation in the next 30 days.
How severe is CVE-2026-25172?
CVE-2026-25172 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-2026-25172?
Yes. A fix has been recorded for CVE-2026-25172. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-25172 affect?
CVE-2026-25172 affects Windows Routing and Remote Access Service (RRAS) on Windows. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-25172?
Apply Windows updates; disable RRAS if not required
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution via RRAS network traffic; attacker can run arbitrary code on affected Windows host.
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.