How severe is CVE-2016-1264?

CVE-2016-1264 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2016-1264 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-1264?

CVE-2016-1264 primarily affects Juniper Junos. In total, 79 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-1264?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2016-1264 published?

CVE-2016-1264 was published on 2016-04-15 and last updated on 2026-06-17.

CVE-2016-1264

CVE-2016-1264 is a high-severity vulnerability in Juniper Junos with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Juniper Junos
Published: 2016-04-15
Last modified: 2026-06-17

Description

Race condition in the Op command in Juniper Junos OS before 12.1X44-D55, 12.1X46 before 12.1X46-D40, 12.1X47 before 12.1X47-D25, 12.3 before 12.3R11, 12.3X48 before 12.3X48-D20, 12.3X50 before 12.3X50-D50, 13.2 before 13.2R8, 13.2X51 before 13.2X51-D39, 13.2X52 before 13.2X52-D30, 13.3 before 13.3R7, 14.1 before 14.1R6, 14.1X53 before 14.1X53-D30, 14.2 before 14.2R4, 15.1 before 15.1F2 or 15.1R2, 15.1X49 before 15.1X49-D10 or 15.1X49-D20, and 16.1 before 16.1R1 allows remote authenticated users to gain privileges via the URL option.

Frequently asked questions

What is CVE-2016-1264?: Race condition in the Op command in Juniper Junos OS before 12.1X44-D55, 12.1X46 before 12.1X46-D40, 12.1X47 before 12.1X47-D25, 12.3 before 12.3R11, 12.3X48 before 12.3X48-D20, 12.3X50 before 12.3X50-D50, 13.2 before 13.2R8, 13.2X51 before 13.2X51-D39, 13.2X52 before 13.2X52-D30, 13.3 before 13.3R7, 14.1 before 14.1R6, 14.1X53 before 14.1X53-D30, 14.2 before 14.2R4, 15.1 before 15.1F2 or 15.1R2, 15.1X49 before 15.1X49-D10 or 15.1X49-D20, and 16.1 before 16.1R1 allows remote authenticated users to gain privileges via the URL option.
How severe is CVE-2016-1264?: CVE-2016-1264 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2016-1264 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-1264?: CVE-2016-1264 primarily affects Juniper Junos. In total, 79 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-1264?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2016-1264 published?: CVE-2016-1264 was published on 2016-04-15 and last updated on 2026-06-17.

References

Affected products (79)

cpe:2.3:o:juniper:junos:*:d50:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.1x46:*:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.1x46:d10:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.1x46:d15:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.1x46:d20:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.1x46:d25:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.1x46:d30:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.1x46:d35:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.1x47:*:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.1x47:d10:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.1x47:d15:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.1x47:d20:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.3:*:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.3:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.3:r10:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.3:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.3:r3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.3:r4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.3:r5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.3:r6:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.3:r7:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.3:r8:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.3:r9:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.3x48:d10:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.3x48:d15:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.3x50:*:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.3x50:d20:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.3x50:d30:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.3x50:d35:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.3x50:d40:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:12.3x50:d45:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:13.2:*:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:13.2:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:13.2:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:13.2:r3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:13.2:r4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:13.2:r5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:13.2:r6:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:13.2:r7:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:13.2:r7-s1:*:*:*:*:*:*

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