CVE-2016-1256 Denial of service in n/a

What is CVE-2016-1256?

CVE-2016-1256 is a medium-severity denial of service vulnerability in Juniper Junos, published on 15 Jan 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Juniper Junos OS before 12.1X44-D55, 12.1X46 before 12.1X46-D40, 12.1X47 before 12.1X47-D25, 12.3 before 12.3R10, 12.3X48 before 12.3X48-D20, 13.2 before 13.2R8, 13.2X51 before 13.2X51-D40, 13.3 before 13.3R7, 14.1 before 14.1R5, 14.1X53 before 14.1X53-D18 or 14.1X53-D30, 14.1X55 before 14.1X55-D25, 14.2 before 14.2R4, 15.1 before 15.1R2, and 15.1X49 before 15.1X49-D10 allow remote attackers to cause a denial of service via a malformed IGMPv3 packet, aka a "multicast denial of service."

Weakness: CWE-399

Which versions are affected by CVE-2016-1256?

It affects 1 product.

Products include Juniper Junos.

How do I fix CVE-2016-1256?

No fix has been published for CVE-2016-1256 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2016-1256 being exploited?

There is no known exploitation of CVE-2016-1256 in the wild and no public exploit code.

Other vulnerabilities in Juniper Junos

• CVE-2023-36845 Juniper Junos OS EX Series and SRX Series PHP External Variable Modification Exploited Critical 9.8
• CVE-2020-1631 Juniper Junos OS Path Traversal Exploited High 8.8
• CVE-2025-21590 Juniper Junos OS Improper Isolation or Compartmentalization Exploited Medium 6.7
• CVE-2023-36851 Juniper Junos OS SRX Series Missing Authentication for Critical Function Exploited Medium 5.3
• CVE-2023-36844 Juniper Junos OS EX Series PHP External Variable Modification Exploited Medium 5.3

All Juniper Junos vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-pxg8-6jj2-8w2g.