CVE-2025-59967: Juniper Networks Junos OS Evolved · NULL Pointer Dereference
Affects Juniper Networks Junos OS EvolvedSource CVE Database V5
Not known to be exploited · CVSS 6.5 Medium.
Data as of 26 Oct 2026, 07:57 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 9 Oct 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.
What to do
AI-suggested
European organizations should prioritize upgrading affected Juniper Junos OS Evolved devices to the fixed versions 23.2R2-S4-EVO or 23.4R2-EVO as soon as possible. Until patches are applied, network administrators should implement strict network segmentation and access controls to limit adjacency to critical network devices, reducing the attack surface. Monitoring multicast traffic patterns for anomalies or spikes in multicast packets may help detect exploitation attempts. Deploying network intrusion detection systems (NIDS) with signatures or heuristics to identify malformed or suspicious multicast traffic targeting the evo-pfemand process can provide early warning. Additionally, disabling unnecessary multicast routing or filtering multicast traffic at network boundaries can reduce exposure. Regularly auditing device configurations and firmware versions will ensure timely identification of vulnerable devices. Coordination with Juniper support for any interim mitigation advice or workarounds is recommended. Finally, maintaining robust incident response plans to quickly address potential DoS incidents will minimize operational impact.
Description
A NULL Pointer Dereference vulnerability in the PFE management daemon (evo-pfemand) of Juniper Networks Junos OS Evolved on ACX7024, ACX7024X, ACX7100-32C, ACX7100-48L, ACX7348, ACX7509 devices allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS). Whenever specific valid multicast traffic is received on any layer 3 interface the evo-pfemand process crashes and restarts. Continued receipt of specific valid multicast traffic results in a sustained Denial of Service (DoS) attack. This issue affects Junos OS Evolved on ACX7024, ACX7024X, ACX7100-32C, ACX7100-48L, ACX7348, ACX7509: * from 23.2R2-EVO before 23.2R2-S4-EVO, * from 23.4R1-EVO before 23.4R2-EVO. This issue affects IPv4 and IPv6. This issue does not affect Junos OS Evolved ACX7024, ACX7024X, ACX7100-32C, ACX7100-48L, ACX7348, ACX7509 versions before 23.2R2-EVO.