Juniper: >> Junos Os Evolved Security Vulnerabilities
An Improper Check for Unusual or Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial-Of-Service (DoS).
When an affected system receives a specific BGP EVPN update message over an established BGP session, this causes an rpd crash and restart.
A BGP EVPN configuration is not necessary to be vulnerable. If peers are not configured to send BGP EVPN updates to a vulnerable device, then this issue can't occur.
This issue affects iBGP and eBGP, over IPv4 and IPv6.
This issue affects:
Junos OS:
* 23.4 versions from
23.4R2-S3 before 23.4R2-S5,
* 24.2 versions from
24.2R2
before 24.2R2-S1,
* 24.4 versions before 24.4R1-S3, 24.4R2;
Junos OS Evolved:
* 23.4-EVO versions from 23.4R2-S2-EVO before 23.4R2-S5-EVO,
* 24.2-EVO versions from 24.2R2-EVO before 24.2R2-S1-EVO,
* 24.4-EVO versions before 24.4R1-S3-EVO, 24.4R2-EVO.
CVSS Score
7.5
EPSS Score
0.001
Published
2025-10-09
Multiple instances of an Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
vulnerability in the CLI of Juniper Networks Junos OS Evolved could be used to elevate privileges and/or execute unauthorized commands.
When an attacker executes crafted CLI commands, the options are processed via a script in some cases. These scripts are not hardened so injected commands might be executed via the shell, which allows an attacker to perform operations, which they should not be able to do according to their assigned permissions.
This issue affects Junos OS Evolved:
* 24.2 versions before 24.2R2-S2-EVO,
* 24.4 versions before 24.4R2-EVO.
This issue does not affect Junos OS Evolved versions earlier than 24.2R1-EVO.
CVSS Score
5.3
EPSS Score
0.003
Published
2025-10-09
An Access of Uninitialized Pointer vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved with BGP sharding configured allows an attacker triggering indirect next-hop updates, along with timing outside the attacker's control, to cause rpd to crash and restart, leading to a Denial of Service (DoS).
With BGP sharding enabled, triggering route resolution of an indirect next-hop (e.g., an IGP route change over which a BGP route gets resolved), may cause rpd to crash and restart. An attacker causing continuous IGP route churn, resulting in repeated route re-resolution, will increase the likelihood of triggering this issue, leading to a potentially extended DoS condition.
This issue affects:
Junos OS:
* all versions before 21.4R3-S6,
* from 22.1 before 22.1R3-S6,
* from 22.2 before 22.2R3-S3,
* from 22.3 before 22.3R3-S3,
* from 22.4 before 22.4R3,
* from 23.2 before 23.2R2;
Junos OS Evolved:
* all versions before 22.3R3-S3-EVO,
* from 22.4 before 22.4R3-EVO,
* from 23.2 before 23.2R2-EVO.
Versions before Junos OS 21.3R1 and Junos OS Evolved 21.3R1-EVO are unaffected by this issue.
CVSS Score
5.3
EPSS Score
0.0
Published
2025-10-09
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.
CVSS Score
6.5
EPSS Score
0.0
Published
2025-10-09
An Uncontrolled Resource Consumption vulnerability in the Connectivity Fault Management (CFM) daemon and the Connectivity Fault Management Manager (cfmman) of Juniper Networks Junos OS Evolved on PTX10001-36MR, PTX10002-36QDD, PTX10004, PTX10008, PTX10016 allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS).
An attacker on an adjacent device sending specific valid traffic can cause cfmd to spike the CPU to 100% and cfmman's memory to leak, eventually to cause the FPC crash and restart.
Continued receipt and processes of these specific valid packets will sustain the Denial of Service (DoS) condition.
An indicator of compromise is to watch for an increase in cfmman memory rising over time by issuing the following command and evaluating the RSS number. If the RSS is growing into GBs then consider restarting the device to temporarily clear memory.
user@device> show system processes node fpc<num> detail | match cfmman
Example:
show system processes node fpc0 detail | match cfmman
F S UID PID PPID PGID SID C PRI NI ADDR SZ WCHAN RSS PSR STIME TTY TIME CMD
4 S root 15204 1 15204 15204 0 80 0 - 90802 - 113652 4 Sep25 ? 00:15:28 /usr/bin/cfmman -p /var/pfe -o -c /usr/conf/cfmman-cfg-active.xml
This issue affects Junos OS Evolved on PTX10001-36MR, PTX10002-36QDD, PTX10004, PTX10008, PTX10016:
* from 23.2R1-EVO before 23.2R2-S4-EVO,
* from 23.4 before 23.4R2-S4-EVO,
* from 24.2 before 24.2R2-EVO,
* from 24.4 before 24.4R1-S2-EVO, 24.4R2-EVO.
This issue does not affect Junos OS Evolved on PTX10001-36MR, PTX10002-36QDD, PTX10004, PTX10008, PTX10016 before 23.2R1-EVO.
CVSS Score
6.5
EPSS Score
0.0
Published
2025-10-09
An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved on PTX Series allows an unauthenticated, network-based attacker to cause impact to confidentiality and availability.
When an output firewall filter is configured with one or more terms where the action is 'reject', packets matching these terms are erroneously sent to the Routing Engine (RE) and further processed there. Processing of these packets will consume limited RE resources. Also responses from the RE back to the source of this traffic could reveal confidential information about the affected device.
This issue only applies to firewall filters applied to WAN or revenue interfaces, so not the mgmt or lo0 interface of the routing-engine, nor any input filters.
This issue affects Junos OS Evolved on PTX Series:
* all versions before 22.4R3-EVO,
* 23.2 versions before 23.2R2-EVO.
CVSS Score
6.5
EPSS Score
0.001
Published
2025-10-09
A Missing Release of Memory after Effective Lifetime vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low privileged user to cause an impact to the availability of the device.
When RIB sharding is enabled and a user executes one of several routing related 'show' commands, a certain amount of memory is leaked. When all available memory has been consumed rpd will crash and restart.
The leak can be monitored with the CLI command:
show task memory detail | match task_shard_mgmt_cookie
where the allocated memory in bytes can be seen to continuously increase with each exploitation.
This issue affects:
Junos OS:
* all versions before 21.2R3-S9,
* 21.4 versions before 21.4R3-S11,
* 22.2 versions before 22.2R3-S7,
* 22.4 versions before 22.4R3-S7,
* 23.2 versions before 23.2R2-S4,
* 23.4 versions before 23.4R2-S4,
* 24.2 versions before 24.2R2,
* 24.4 versions before 24.4R1-S2, 24.4R2;
Junos OS Evolved:
* all versions before 22.2R3-S7-EVO
* 22.4-EVO versions before 22.4R3-S7-EVO,
* 23.2-EVO versions before 23.2R2-S4-EVO,
* 23.4-EVO versions before 23.4R2-S4-EVO,
* 24.2-EVO versions before 24.2R2-EVO,
* 24.4-EVO versions before 24.4R2-EVO.
CVSS Score
5.5
EPSS Score
0.0
Published
2025-07-11
An Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in the CLI of Juniper Networks Junos OS and Junos OS Evolved allows a high privileged, local attacker to escalated their privileges to root.
When a user provides specifically crafted arguments to the 'request system logout' command, these will be executed as root on the shell, which can completely compromise the device.
This issue affects:
Junos OS:
* all versions before 21.2R3-S9,
* 21.4 versions before 21.4R3-S8,
* 22.2 versions before 22.2R3-S6,
* 22.3 versions before 22.3R3-S3,
* 22.4 versions before 22.4R3-S6,
* 23.2 versions before 23.2R2-S1,
* 23.4 versions before 23.4R1-S2, 23.4R2;
Junos OS Evolved:
* all versions before 22.4R3-S6-EVO,
* 23.2-EVO versions before 23.2R2-S1-EVO,
* 23.4-EVO versions before 23.4R1-S2-EVO, 23.4R2-EVO.
CVSS Score
6.7
EPSS Score
0.0
Published
2025-07-11
An Improper Neutralization of Delimiters vulnerability in the UI of Juniper Networks Junos OS and Junos OS Evolved allows a local, authenticated attacker with high privileges to modify the system configuration.
A user with limited configuration and commit permissions, using a specifically crafted annotate configuration command, can change any part of the device configuration.
This issue affects:
Junos OS:
* all versions before 22.2R3-S7,
* 22.4 versions before 22.4R3-S7,
* 23.2 versions before 23.2R2-S4,
* 23.4 versions before 23.4R2-S4,
* 24.2 versions before 24.2R2-S1,
* 24.4 versions before 24.4R1-S2, 24.4R2;
Junos OS Evolved:
* all versions before 22.4R3-S7-EVO,
* 23.2-EVO versions before 23.2R2-S4-EVO,
* 23.4-EVO versions before 23.4R2-S5-EVO,
* 24.2-EVO versions before 24.2R2-S1-EVO
* 24.4-EVO versions before 24.4R2-EVO.
CVSS Score
5.1
EPSS Score
0.0
Published
2025-07-11
A NULL Pointer Dereference vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause impact to the availability of the device.
When static route points to a reject next hop and a gNMI query is processed for that static route, rpd crashes and restarts.
This issue affects:
Junos OS: * all versions before 21.2R3-S9,
* 21.4 versions before 21.4R3-S10,
* 22.2 versions before 22.2R3-S6,
* 22.4 versions before 22.4R3-S6,
* 23.2 versions before 23.2R2-S3,
* 23.4 versions before 23.4R2-S4,
* 24.2 versions before 24.2R1-S2, 24.2R2;
Junos OS Evolved:
* all versions before 22.4R3-S7-EVO,
* 23.2-EVO
versions before 23.2R2-S3-EVO,
* 23.4-EVO versions before 23.4R2-S4-EVO,
* 24.2-EVO versions before 24.2R2-EVO.
CVSS Score
5.9
EPSS Score
0.0
Published
2025-07-11