CVE-2022-35838
Published: 13 September 2022
Summary
CVE-2022-35838 is a high-severity an unspecified weakness vulnerability in Microsoft Windows 11. Its CVSS base score is 7.5 (High).
Operationally, ranked in the top 4.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2022-35838 is an HTTP V3 Denial of Service vulnerability carrying a CVSS 3.1 score of 7.5. The flaw permits an unauthenticated network attacker to trigger a high-impact availability condition without any user interaction or special privileges, as indicated by the vector string AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
An attacker positioned on the network can send crafted HTTP/3 traffic to the affected service, resulting in denial of service. Because the attack requires no authentication or user assistance, remote exploitation is possible against any reachable endpoint that implements the vulnerable HTTP/3 handling.
Microsoft Security Response Center advisories for CVE-2022-35838 are referenced at the supplied MSRC URLs and should be consulted for official patch availability and mitigation guidance.
The associated EPSS score reached a peak of 0.1948 with no material increase from a lower baseline, indicating steady but not sharply rising exploitation interest after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-38711
Vulnerability details
HTTP V3 Denial of Service Vulnerability
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.