KEV · Actively exploited
CVE-2023-44487
HIGH 7.5
KEV
The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.
Attack vector : Network
No privileges required
No user interaction
Show raw CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
100.00%
exploit likely
percentile 100.0%
CISA Known Exploited Vulnerability
- Added to KEV
- 2023-10-10
- Remediation deadline
- 2023-10-31
- Required action
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- Ransomware
- Unknown (not documented by CISA)
OS versions that fix this CVE
This CVE is resolved by the following OS security releases. Update the OS to at least the listed version.
- Windows Server 2022 Fixed in 10.0.20348.2031
- Windows Server 2019 Fixed in 10.0.17763.4974
- Windows Server 2016 Fixed in 10.0.14393.6351
- Windows 11 22H2 · 2022-H2 Fixed in 10.0.22621.2428
- Windows 11 21H2 · 2021-H2 Fixed in 10.0.22000.2538
- Windows 10 22H2 · 2022-H2 Fixed in 10.0.19045.3570
- Windows 10 21H2 · 2021-H2 Fixed in 10.0.19044.3570
- Windows 10 1809 · 2018-09 Fixed in 10.0.17763.4974
- Windows 10 1607 · 2016-07 Fixed in 10.0.14393.6351