No exploitation reportedFix available

CVE-2019-9512

Q: Is CVE-2019-9512 actively exploited?

Active exploitation of CVE-2019-9512 has not been confirmed. Its EPSS score was 83.4% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2019-9512?

CVE-2019-9512 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

No exploitation reported by the sources we read.

Published2019-08-13
Fixed in12.8.1 · 10.16.3 · 8.16.1
WeaknessCWE-400

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC

2019-08-1321:15CVE publishedNVD
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-9512?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-9512?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Node.js

Branch	Affected	Fixed in	Source
12.x	≥ 12.0.0, < 12.8.1	12.8.1	NVD
10.x	≥ 10.13.0, < 10.16.3	10.16.3	NVD
8.x	≥ 8.9.0, < 8.16.1	8.16.1	NVD
8.x	≥ 8.0.0, ≤ 8.8.1	no fix published	NVD
10.x	≥ 10.0.0, ≤ 10.12.0	no fix published	NVD

Apache traffic server

Branch	Affected	Fixed in	Source
6.x	≥ 6.0.0, ≤ 6.2.3	no fix published	NVD
7.x	≥ 7.0.0, ≤ 7.1.6	no fix published	NVD
8.0	≥ 8.0.0, ≤ 8.0.3	no fix published	NVD

Apple swiftnioversion to verify

Branch	Affected	Fixed in	Source
1.x	≥ 1.0.0, ≤ 1.4.0	no fix published	NVD

1 more product in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Node.js to 12.8.1 · 10.16.3 · 8.16.1

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.5read 2026-10-23
CNACVSS 3.07.5read 2026-10-23
NVDCVSS 2.07.8read 2026-10-23
CNAweakness (CWE)CWE-400read 2026-10-23
NVDweakness (CWE)CWE-400read 2026-10-23
FIRST EPSSEPSS score83.4 %read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2019-08-13
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2019-9512?

Is CVE-2019-9512 actively exploited?

Active exploitation of CVE-2019-9512 has not been confirmed. Its EPSS score was 83.4% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-9512?

CVE-2019-9512 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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