CVE-2015-7575

Mozilla Network Security Services (NSS) before 3.20.2, as used in Mozilla Firefox before 43.0.2 and Firefox ESR 38.x before 38.5.2, does not reject MD5 signatures in Server Key Exchange messages in TLS 1.2 Handshake Protocol traffic, which makes it easier for man-in-the-middle attackers to spoof servers by triggering a collision.

CVSS 3.0

5.9CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS

2.9% chance of exploitation in the next 30 days; higher than 86% of CVEs (scores of 2026-10-25)

CWE

CWE-19

Published

2016-01-09

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• canonical:ubuntu_linux
• mozilla:firefox
• mozilla:network_security_services
• opensuse:leap
• opensuse:opensuse

References

• http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00038.html
• http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00041.html
• http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00042.html
• http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00043.html
• http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00044.html

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