What is CVE-2016-1273?

CVE-2016-1273 is a medium-severity vulnerability in Juniper Junos, classified under Cryptographic Issues. CVSS score: 5.9/10. Published 2016-04-15.

How severe is CVE-2016-1273?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Vulnerability in Juniper Junos

CVE-2016-1273

Juniper Junos OS before 13.2X51-D40, 14.x before 14.1X53-D30, and 15.x before 15.1X53-D20 on QFX5100 and QFX10002 switches do not have sufficient entropy, which makes it easier for remote attackers to defeat cryptographic encryption and authentication protection mechanisms via unspecified vectors.

Vulnerability class: POODLE (CVE-2014-3566)

Published 2016-04-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.007 (49.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Juniper Junos — versions 14.1x53, 15.1, 15.1x49
Juniper Qfx10002
Juniper Qfx5100

Weakness classification (CWE)

CWE-310 — Cryptographic Issues

References

kb.juniper.net/InfoCenter/index (Vendor Advisory)

Frequently asked questions

What is CVE-2016-1273?: CVE-2016-1273 is a medium-severity vulnerability in Juniper Junos, classified under Cryptographic Issues. CVSS score: 5.9/10. Published 2016-04-15.
How severe is CVE-2016-1273?: Medium severity. CVSS v3 base score is 5.9 out of 10.