CVE-2019-9514
Some HTTP/2 implementations are vulnerable to a reset flood, potentially leading to a denial of service.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 82.8%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.
Description
Some HTTP/2 implementations are vulnerable to a reset flood, potentially leading to a denial of service. The attacker opens a number of streams and sends an invalid request over each stream that should solicit a stream of RST_STREAM frames from the peer. Depending on how the peer queues the RST_STREAM frames, this can consume excess memory, CPU, or both.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 82.81% probability · 100th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-400, CWE-770
- Affected
- apple/swiftnio · apache/traffic server · debian/debian linux · canonical/ubuntu linux · synology/skynas · synology/diskstation manager · synology/vs960hd firmware · fedoraproject/fedora · opensuse/leap · redhat/developer tools · redhat/jboss core services · redhat/jboss enterprise application platform · redhat/openshift container platform · redhat/openshift service mesh · redhat/openstack · redhat/quay · redhat/single sign-on · redhat/software collections · redhat/enterprise linux · redhat/enterprise linux eus · +8 more
- Source
- cret@cert.org
EPSS 82.8% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00076.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00002.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00011.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00021.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00031.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00032.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00038.htmlMailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2019/Aug/16Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/08/20/1Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2023/10/18/8
- https://access.redhat.com/errata/RHSA-2019:2594Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2661Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2682Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2690Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2726Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2766Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2769Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2796Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2861Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2925Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2939Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2955Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2966Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3131Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3245Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3265Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3892Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3906Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:4018Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:4019Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.