CVE-2015-7871
9.8
CRITICAL
CVSS 3.1
EPSS 83.6%
Description
Crypto-NAK packets in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to bypass authentication.
How to fix CVE-2015-7871
To remediate CVE-2015-7871, upgrade the affected package to a fixed version below.
- Debian/ntp—upgrade to 1:4.2.8p4+dfsg-1 or later
Is CVE-2015-7871 being exploited?
Likely — EPSS is 83.6%, placing CVE-2015-7871 in the top tier of vulnerabilities by exploitation probability. Prioritise patching.
Affected packages (1)
- from 0, < 1:4.2.8p4+dfsg-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |