How severe is CVE-2016-9574?

CVE-2016-9574 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2016-9574 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-9574?

CVE-2016-9574 affects Mozilla Network Security Services. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-9574?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2016-9574 published?

CVE-2016-9574 was published on 2018-07-19 and last updated on 2026-06-17.

CVE-2016-9574

CVE-2016-9574 is a medium-severity vulnerability in Mozilla Network Security Services with a CVSS 3.x base score of 5.9. 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-384.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-384
Affected product: Mozilla Network Security Services
Published: 2018-07-19
Last modified: 2026-06-17

Description

nss before version 3.30 is vulnerable to a remote denial of service during the session handshake when using SessionTicket extension and ECDHE-ECDSA.

Frequently asked questions

What is CVE-2016-9574?: nss before version 3.30 is vulnerable to a remote denial of service during the session handshake when using SessionTicket extension and ECDHE-ECDSA.
How severe is CVE-2016-9574?: CVE-2016-9574 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2016-9574 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-9574?: CVE-2016-9574 affects Mozilla Network Security Services. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-9574?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-9574 published?: CVE-2016-9574 was published on 2018-07-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mozilla:network_security_services:*:*:*:*:*:*:*:*

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