HIGHCVSS 7.5Actively exploited · CISA KEV since 2023-10-10Vulnerability

CVE-2023-44487

HTTP/2 contains a rapid reset vulnerability that allows for a distributed denial-of-service attack (DDoS).

Properties

Vulnerability name
HTTP/2 Rapid Reset Attack Vulnerability
First seen
2026-10-14T23:51:51+00:00
Cvss score
7.5
Epss score
0.99999
Last seen
2026-10-19T12:00:27+00:00
Due date
2023-10-31
Euvd assigner
mitre
Retrieved at
2026-10-21T01:24:47+00:00
Exploited euvd since
2023-10-10T00:00:00+00:00
Src batch id
epss_history-20261020T103617Z-728ddd
Source url
https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
Date added
2023-10-10
Euvd base score version
3.1
Score
7.5
Fetched at
2026-10-20T10:36:20+00:00
Cvss vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
In Signal since
initial import (Sep 2026)
Euvd base score
7.5
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vendor project
IETF

Related Entities (391 · showing 25)

AFFECTS_PRODUCT (386 · showing 20)

→[Product]cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:17.1.0:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:nexus_9804:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:nexus_9516_switch:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:nexus_9636pq:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:nexus_9808:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:nexus_9508_switch:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:nexus_9536pq:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:nexus_9800:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:nexus_9516:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:nexus_9736pq:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:nexus_9716d-gx:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:nexus_93240yc-fx2:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:nexus_9372tx-e_switch:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:nexus_9372tx:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:nexus_9500_supervisor_a\+:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:nexus_9500_4-slot:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:nexus_9336pq_aci_spine_switch:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:nexus_9348gc-fxp:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:nexus_9348gc-fx3:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:nexus_9508:-:*:*:*:*:*:*:*

MENTIONED_IN (2)

→[Campaign]ASO RAT: Arabic-Language Android Surveillance Platform Targeting Syria
→[Campaign]EtherHiding Exposed: Inside a Blockchain-powered Malware Campaign Hiding in Plain Sight

DESCRIBES (1)

←[KEVEntry]HTTP/2 Rapid Reset Attack Vulnerability

HAS_WEAKNESS (1)

→[Weakness]Uncontrolled Resource Consumption

INVOLVES (1)

←[Signal]kev_added · 2023-10-10

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CVE-2023-44487 (CVSS 7.5) — Ninja Signal Threat Intelligence | Ninja Signal