CVE-2016-8635
It was found that Diffie Hellman Client key exchange handling in NSS 3.21.x was vulnerable to small subgroup confinement attack.
Does this matter?
Lower severity and a low EPSS score (1.99%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.0
- 5.9 MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 1.99% probability · 81th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-358, CWE-320
- Affected
- mozilla/network security services · redhat/enterprise linux desktop · redhat/enterprise linux server · redhat/enterprise linux server aus · redhat/enterprise linux server eus · redhat/enterprise linux server tus · redhat/enterprise linux workstation
- Source
- secalert@redhat.com
EPSS 2.0% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://rhn.redhat.com/errata/RHSA-2016-2779.htmlThird Party Advisory
- http://www.securityfocus.com/bid/94346Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-8635Issue Tracking, Third Party Advisory
- https://security.gentoo.org/glsa/201701-46Third Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-2779.htmlThird Party Advisory
- http://www.securityfocus.com/bid/94346Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-8635Issue Tracking, Third Party Advisory
- https://security.gentoo.org/glsa/201701-46Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.