Advisory details:
vulnrichment / CVE-2023-44487
| Advisory ID | vulnrichment/CVE-2023-44487 |
| Aliases | |
| Summary | 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. |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 0.0 |
| Risk | |
| Affected and Fixed Packages | Package Details |
| Introduced and Fixed Package Commit Patches | Package Commit Patches Details |
| There are no known CWE. |
| System | Score | Found at |
|---|---|---|
| cvssv3.1 | 7.5 | |
| ssvc | Attend |
| Data source | Exploit-DB |
|---|---|
| Date added | Sept. 16, 2025 |
| Description | HTTP/2 2.0 - Denial Of Service (DOS) |
| Ransomware campaign use | Unknown |
| Source publication date | Sept. 16, 2025 |
| Exploit type | remote |
| Platform | multiple |
| Source update date | Sept. 16, 2025 |
| Data source | KEV |
|---|---|
| Date added | Oct. 10, 2023 |
| Description | HTTP/2 contains a rapid reset vulnerability that allows for a distributed denial-of-service attack (DDoS). |
| 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. |
| Due date | Oct. 31, 2023 |
| Note | This vulnerability affects a common open-source component, third-party library, or protocol used by different products. For more information, please see: HTTP/2 Rapid Reset Vulnerability, CVE-2023-44487 | CISA: https://www.cisa.gov/news-events/alerts/2023/10/10/http2-rapid-reset-vulnerability-cve-2023-44487; https://blog.cloudflare.com/technical-breakdown-http2-rapid-reset-ddos-attack/; https://nvd.nist.gov/vuln/detail/CVE-2023-44487 |
| Ransomware campaign use | Unknown |
No EPSS data available for this advisory.
| Patch URL | |
|---|---|
| There are no known patches. | |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
Vector: SSVCv2/E:A/A:Y/T:P/P:M/B:A/M:M/D:A/2024-07-23T20:34:21Z/
Decision: Attend
Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2023/44xxx/CVE-2023-44487.json
Source Advisory: vulnrichment/CVE-2023-44487
[{'Exploitation': 'active'},
{'Automatable': 'yes'},
{'Technical Impact': 'partial'},
{'Mission Prevalence': 'minimal'},
{'Public Well-being Impact': 'material'},
{'Mission & Well-being': 'medium'}]