CVE-2019-9512 | Some HTTP/2 implementations are vulnerable to ping floods, potentially leading to a denial of service. The attacker sends continual pings to an HTTP/2 peer, causing the peer to build an internal queue of responses. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.
Some HTTP/2 implementations are vulnerable to ping floods, potentially leading to a denial of service. The attacker sends continual pings to an HTTP/2 peer, causing the peer to build an internal queue of responses. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.
- 🔗 kb.cert.org/vuls/id/605641/
- 🔗 github.com/Netflix/security-bulletins/blob/master/ad…
- 🔗 lists.apache.org/thread.html/bde52309316ae798186d783a5e29f…
- 🔗 lists.apache.org/thread.html/392108390cef48af647a2e47b7fd5…
- 🔗 lists.apache.org/thread.html/ad3d01e767199c1aed8033bb6b3f5…
- 🔗 seclists.org/bugtraq/2019/Aug/24
- 🔗 seclists.org/fulldisclosure/2019/Aug/16
- 🔗 www.synology.com/security/advisory/Synology_SA_19_33
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| Tier | 2026-08-29 | 2026-09-06 |
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CVE-2019-9512 | Some HTTP/2 implementations are vulnerable to ping floods, potentially leading to a denial of service. The attacker sends continual pings to an HTTP/2 peer, causing the peer to build an internal queue of responses. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.
Some HTTP/2 implementations are vulnerable to ping floods, potentially leading to a denial of service. The attacker sends continual pings to an HTTP/2 peer, causing the peer to build an internal queue of responses. Depending on how efficien