Is CVE-2016-8635 in the CISA KEV catalog?

No. CVE-2016-8635 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-8635?

CVE-2016-8635 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2016-8635?

CVE-2016-8635 has an EPSS score of 2.02% (78th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-8635?

Upgrade nss on debian 11 to 2:3.25-1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2016-8635

MEDIUMEPSS 78th pctl

5.3

CVSS v3

NVD

Description

It was found that Diffie Hellman Client key exchange handling in NSS 3.21.x was vulnerable to small subgroup confinement attack. An attacker could use this flaw to recover private keys by confining the client DH key to small subgroup of the desired group.

CWE-358 CWE-320

How to fix

Remediation Available

nssDebian

Fixed in:2:3.25-1CVE-2016-8635

libnss3Ubuntu

Fixed in:2:3.26.2-0ubuntu0.14.04.3USN-3163-1

Fixed in:2:3.26.2-0ubuntu0.16.04.2USN-3163-1

nssUbuntu

Fixed in:2:3.26.2-0ubuntu0.14.04.3USN-3163-1

Fixed in:2:3.26.2-0ubuntu0.16.04.2USN-3163-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploit Intelligence

2.02%probability of exploitation in 30 days

78thpercentile

Elevated risk: more likely to be exploited than 78% of all known CVEs.

References

Third-Party Advisory4

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.