Home › Exploited CVEs › CVE-2023-44487
CVE-2023-44487: HTTP/2 Rapid Reset Attack Vulnerability
IETF HTTP/2 · in CISA KEV since 2023-10-10
2023-10-10added to KEV
2023-10-31federal remediation due date
100.00%EPSS exploit probability (30 days) 100.0th percentile
7.5 HIGHCVSS 3.1
Unknownknown ransomware use
0days from NVD publication to KEV
What it is
HTTP/2 contains a rapid reset vulnerability that allows for a distributed denial-of-service attack (DDoS).
Required action (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
| CWE | CWE-400 |
|---|---|
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD published | 2023-10-10 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2023-44487.json · all KEV CVEs
Kevscope: daily CISA KEV + EPSS datasetThe whole KEV catalog joined with daily EPSS and CVSS scores as CSV/Parquet, refreshed daily. Free to download.
Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.
Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.