CVE-2024-21607
published 2024-01-12CVE-2024-21607: An Unsupported Feature in the UI vulnerability in Juniper Networks Junos OS on MX Series and EX9200 Series allows an unauthenticated, network-based attacker to…
PriorityP430medium5.3CVSS 3.1
AVNACLPRNUINSUCNILAN
EPSS
0.31%
23.1th percentile
An Unsupported Feature in the UI vulnerability in Juniper Networks Junos OS on MX Series and EX9200 Series allows an unauthenticated, network-based attacker to cause partial impact to the integrity of the device.
If the "tcp-reset" option is added to the "reject" action in an IPv6 filter which matches on "payload-protocol", packets are permitted instead of rejected. This happens because the payload-protocol match criteria is not supported in the kernel filter causing it to accept all packets without taking any other action. As a fix the payload-protocol match will be treated the same as a "next-header" match to avoid this filter bypass.
This issue doesn't affect IPv4 firewall filters.
This issue affects Juniper Networks Junos OS on MX Series and EX9200 Series:
* All versions earlier than 20.4R3-S7;
* 21.1 versions earlier than 21.1R3-S5;
* 21.2 versions earlier than 21.2R3-S5;
* 21.3 versions earlier than 21.3R3-S4;
* 21.4 versions earlier than 21.4R3-S4;
* 22.1 versions earlier than 22.1R3-S2;
* 22.2 versions earlier than 22.2R3-S2;
* 22.3 versions earlier than 22.3R2-S2, 22.3R3;
* 22.4 versions earlier than 22.4R1-S2, 22.4R2-S2, 22.4R3.
Affected
25 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| juniper | junos | < 20.4 | 20.4 |
| juniper | junos | < 21.2 | 21.2 |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos | — | — |
| juniper | junos_os | — | — |
| juniper | mx_series | — | — |
| juniper_networks | junos_os | < 21.2R3-S9 | 21.2R3-S9 |
| juniper_networks | junos_os | >= 21.4 < 21.4R3-S11 | 21.4R3-S11 |
| juniper_networks | junos_os | >= 22.2 < 22.2R3-S7 | 22.2R3-S7 |
| juniper_networks | junos_os | >= 22.4 < 22.4R3-S7 | 22.4R3-S7 |
| juniper_networks | junos_os | >= 23.2 < 23.2R2-S4 | 23.2R2-S4 |
| juniper_networks | junos_os | >= 23.4 < 23.4R2-S5 | 23.4R2-S5 |
| juniper_networks | junos_os | >= 24.2 < 24.2R2-S1 | 24.2R2-S1 |
| juniper_networks | junos_os | >= 24.4 < 24.4R1-S2, 24.4R2 | 24.4R1-S2, 24.4R2 |
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
Juniper
CVE-2025-52951: A Protection Mechanism Failure vulnerability in kernel filter processing of Juniper Networks Junos OS allows an attacker sending IPv6 traffic destined
vendor_juniper·2025-07-11·CVSS 5.8
CVE-2025-52951 [MEDIUM] CWE-693 CVE-2025-52951: A Protection Mechanism Failure vulnerability in kernel filter processing of Juniper Networks Junos OS allows an attacker sending IPv6 traffic destined
CVE-2025-52951: A Protection Mechanism Failure vulnerability in kernel filter processing of Juniper Networks Junos OS allows an attacker sending IPv6 traffic destined to the device to effectively bypass any firewall filtering configured on the interface.
Due to an issue with Junos OS kernel filter processing, the 'payload-protocol' match is not being supported, causing any term containing it to accept all packets without taking any other action. In essence, these firewall filter terms were being processed as an 'accept' for all traffic on the interface destined for the control plane, even when used in combination with other match criteria.
This issue only affects firewall filters protecting the device's control plane. Transit firewall filtering is unaffected by this vulnerability.
This
Juniper
CVE-2024-21607:
An Unsupported Feature in the UI vulnerability in Juniper Networks Junos OS on MX Series and EX9200 Series allows an unauthenticated, network-based a
vendor_juniper·2024-01-12·CVSS 5.3
CVE-2024-21607 [MEDIUM] CWE-447 CVE-2024-21607:
An Unsupported Feature in the UI vulnerability in Juniper Networks Junos OS on MX Series and EX9200 Series allows an unauthenticated, network-based a
CVE-2024-21607:
An Unsupported Feature in the UI vulnerability in Juniper Networks Junos OS on MX Series and EX9200 Series allows an unauthenticated, network-based attacker to cause partial impact to the integrity of the device.
If the "tcp-reset" option is added to the "reject" action in an IPv6 filter which matches on "payload-protocol", packets are permitted instead of rejected. This happens because the payload-protocol match criteria is not supported in the kernel filter causing it to accept all packets without taking any other action. As a fix the payload-protocol match will be treated the same as a "next-header" match to avoid this filter bypass.
This issue doesn't affect IPv4 firewall filters.
This issue affects Juniper Networks Junos OS on MX Series and EX9200 Series:
* All ve
GHSA
GHSA-wgx4-f5ch-j468: A Protection Mechanism Failure vulnerability in kernel filter processing of Juniper Networks Junos OS allows an attacker sending IPv6 traffic to an in
ghsa_unreviewed·2025-07-11·CVSS 5.3
CVE-2025-52951 [MEDIUM] CWE-693 GHSA-wgx4-f5ch-j468: A Protection Mechanism Failure vulnerability in kernel filter processing of Juniper Networks Junos OS allows an attacker sending IPv6 traffic to an in
A Protection Mechanism Failure vulnerability in kernel filter processing of Juniper Networks Junos OS allows an attacker sending IPv6 traffic to an interface to effectively bypass any firewall filtering configured on the interface.
Due to an issue with Junos OS kernel filter processing, the 'payload-protocol' match is not being supported, causing any term containing it to accept all packets without taking any other action. In essence, these firewall filter terms were being processed as an 'accept' for all traffic on the interface.
This issue affects Junos OS:
* all versions before 21.2R3-S9,
* from 21.4 before 21.4R3-S11,
* from 22.2 before 22.2R3-S7,
* from 22.4 before 22.4R3-S7,
* from 23.2 before 23.2R2-S4,
* from 23.4 before 23.4R2-S5,
* from 24.2 before 24.2R2-S1,
* from 24.4 befo
GHSA
GHSA-84c9-gp6c-qg45: An Unsupported Feature in the UI vulnerability in Juniper Networks Junos OS on MX Series and EX9200 Series allows an unauthenticated, network-based at
ghsa_unreviewed·2024-01-12
CVE-2024-21607 [MEDIUM] CWE-447 GHSA-84c9-gp6c-qg45: An Unsupported Feature in the UI vulnerability in Juniper Networks Junos OS on MX Series and EX9200 Series allows an unauthenticated, network-based at
An Unsupported Feature in the UI vulnerability in Juniper Networks Junos OS on MX Series and EX9200 Series allows an unauthenticated, network-based attacker to cause partial impact to the integrity of the device.
If the "tcp-reset" option is added to the "reject" action in an IPv6 filter which matches on "payload-protocol", packets are permitted instead of rejected. This happens because the payload-protocol match criteria is not supported in the kernel filter causing it to accept all packets without taking any other action. As a fix the payload-protocol match will be treated the same as a "next-header" match to avoid this filter bypass.
This issue doesn't affect IPv4 firewall filters.
This issue affects Juniper Networks Junos OS on MX Series and EX9200 Series:
* All versions earlier t
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2024-01-12
Published