How severe is CVE-2017-11499?

CVE-2017-11499 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2017-11499 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-11499?

CVE-2017-11499 primarily affects Nodejs Node.js. In total, 100 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-11499?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2017-11499 published?

CVE-2017-11499 was published on 2017-07-25 and last updated on 2026-06-17.

CVE-2017-11499

CVE-2017-11499 is a high-severity vulnerability in Nodejs Node.js with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 5% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Nodejs Node.js
Published: 2017-07-25
Last modified: 2026-06-17

Description

Node.js v4.0 through v4.8.3, all versions of v5.x, v6.0 through v6.11.0, v7.0 through v7.10.0, and v8.0 through v8.1.3 was susceptible to hash flooding remote DoS attacks as the HashTable seed was constant across a given released version of Node.js. This was a result of building with V8 snapshots enabled by default which caused the initially randomized seed to be overwritten on startup.

Frequently asked questions

What is CVE-2017-11499?: Node.js v4.0 through v4.8.3, all versions of v5.x, v6.0 through v6.11.0, v7.0 through v7.10.0, and v8.0 through v8.1.3 was susceptible to hash flooding remote DoS attacks as the HashTable seed was constant across a given released version of Node.js. This was a result of building with V8 snapshots enabled by default which caused the initially randomized seed to be overwritten on startup.
How severe is CVE-2017-11499?: CVE-2017-11499 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2017-11499 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-11499?: CVE-2017-11499 primarily affects Nodejs Node.js. In total, 100 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-11499?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-11499 published?: CVE-2017-11499 was published on 2017-07-25 and last updated on 2026-06-17.

References

Affected products (100)

cpe:2.3:a:nodejs:node.js:4.0.0:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.1.0:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.1.1:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.1.2:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.2.0:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.2.1:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.2.2:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.2.3:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.2.4:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.2.5:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.2.6:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.3.0:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.3.1:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.3.2:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.4.0:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.4.1:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.4.2:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.4.3:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.4.4:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.4.5:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.4.6:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.4.7:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.5.0:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.6.0:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.6.1:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.6.2:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.7.0:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.7.1:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.7.2:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.7.3:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.8.0:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.8.1:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.8.2:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:4.8.3:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:5.0.0:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:5.1.0:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:5.1.1:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:5.2.0:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:5.3.0:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:5.4.0:*:*:*:*:*:*:*

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