CVE-2020-25648

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CVSS 3.1

7.5 high

EPSS

4%p90

Published

Oct 20, 2020 (Oct 20, 2020)

Modified

Jun 17, 2026

Description

A flaw was found in the way NSS handled CCS (ChangeCipherSpec) messages in TLS 1.3. This flaw allows a remote attacker to send multiple CCS messages, causing a denial of service for servers compiled with the NSS library. The highest threat from this vulnerability is to system availability. This flaw affects NSS versions before 3.58.

Vendors: mozilla redhat fedoraproject oracle
Products: network security services, enterprise linux, fedora, communications offline mediation controller, communications pricing design center, jd edwards enterpriseone tools
Weakness: CWE-770
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (3.9%)

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