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Resolved Issues

Learn about the issues fixed in this release for EX Series switches.

For the most complete and latest information about known Junos OS defects, use the Juniper Networks online Junos Problem Report Search application.

General Routing

  • Incorrect Green LED Indication on 4x10G SFP/SFP+ Uplink Module When Link Is Down PR1833177

  • TDR test can cause a CPU hog and result in BFD flaps PR1841117

  • Junos OS: EX4k Series, QFX5k Series: In an EVPN-VXLAN configuration link flaps cause Inter-VNI traffic drop (CVE-2026-21910) PR1847849

  • The dcpfe process crashes on specific Junos QFX and EX platforms due to memory corruption PR1856424

  • Lower rate is not negotiated even if auto-negotiation is configured on EX3400 platforms PR1858406

  • EX4400: Error message 'Failed to read eeprom' intermittently on SFP-T PR1858986

  • The 'fxpc' process utilization shows above 80% with 100G AOC/DAC or 100G optics connected on interface with FEC mode mismatch PR1860519

  • On Junos QFX5000 series and EX4000 series platforms, an fxpc process crash triggers an FPC reboot PR1866815

  • EX4400, EX4100, QFX5120, and EX4650 crash with kernel and continuous reboot during EVPN Type-5 scale deployments PR1869166

  • The PTP packets are dropped when IGMP snooping is enabled PR1873129

  • EX9208: Syslog message 'JINSIGHTD_SENSOR_RESUBSCRIPTION' every 5 seconds. PR1873990

  • Wrong digest algorithm is used for ECDSA key based certificate requests using PKI. PR1876497

  • On EX4100/EX4400s platforms PoE powered devices connected do not come up when adding a second power supply unit. PR1876675

  • There is a PoE short circuit alarm after upgrading the device. PR1879702

  • The chassisd process crashes when the command to ignore a "power entry module" alarm is set. PR1880863

  • JMA package fails to initialise after a power cycle on EX4650/QFX-5E series devices. PR1882472

  • Link-mode shows Half-Duplex when interface is set to 100M/10M with full-duplex and no-auto-negotiation. PR1883130

  • Error messages are seen when the device is loaded with baseline EVPN-VxLAN configuration. PR1884063

  • The aaasd process stops responding for RPC calls. PR1885622

  • snmp mib walk DomCurrentLaneAlarms does not show proper lanes Values in the latest builds. PR1886889

  • Configuring loopback firewall optimization causes IPv6 BGP session down. PR1886981

  • On some EX or QFX platforms, 25G interfaces remain down with a default FEC(Forward Error Correction) 74 value when peer device has default FEC as None. PR1890164

  • The pkid crash is observed during enrolment of device's local certificate through SCEP. PR1892297

  • FXPC crash on EX4k VC during GRES operation. PR1893742

  • Physical Interface device remains down by continuous system reboots on EX and QFX5K platforms. PR1894136

  • The enable-pxe-boot is not working as expected on specific EX or QFX platforms with Easy EVPN LAG single home server topology. PR1895433

  • Traffic loss is observed on the CVLAN interfaces during the transition between SP and EP configuration style. PR1899441

  • EX2300/EX3400: TFTP installation failure. PR1900881

  • [ex4000]:: Dot1x client remains in server-fail vlan post radius-reachability timer expiry. PR1901304

  • PFE crashes on QFX5K and EX4K platforms in standalone and VC setups due to logging of PFE. PR1901837

  • Intermittent kernel panic results in device reboot or fxpc crash. PR1902609

  • Significant system slowness is observed post software upgrade on QFX5120-48YM. PR1902869

  • During virtual chassis switchover causes default dead route creation. PR1904091

  • Stale entry in MAC-IP table affects ARP resolution. PR1905196

  • False "Device Manager Failure" Alarms Observed on PoE Subsystem. PR1906507

  • The dcpfe process crash seen upon insertion of dual-speed 10/25G optics on EX4650. PR1908340

  • EX4000: An "unknown uboot version" error may be seen sometimes during software add operation. PR1910075

  • On-change telemetry events dropped when l2ald telemetry queue memory limit is not configured. PR1914423

  • Enhanced Loop Detect vlan-id all option now available for EX4650 and QFX5120. PR1919868

  • Upgrade from release 23.4R2-S4 with persistent-cache enabled on VC can cause dot1xd to crash continuously. PR1923266

  • CLI stops working on Junos EX and QFX platforms post device reboot. PR1925572

  • The hash collision for storm control profile indices will result into l2ald process crash. PR1930380

Application Layer Gateways (ALGs)

  • Junos OS: SRX Series, MX Series with MX-SPC3 or MS-MPC: Receipt of multiple specific SIP messages results in flow management process crash (CVE-2026-21905). PR1876029

EVPN

  • EVPN routes take longer to install into the FIB after being learned via BGP. PR1893671

Forwarding and Sampling

  • Filter name mapping error in routing instances with attached firewall filter. PR1889028

  • Memory leak in FPC during login/logout. PR1890097

  • Firewall filter not processing traffic with flex offset configuration is enabled. PR1901312

Interfaces and Chassis

  • Traffic drops due to VLAN configuration not updated for Ethernet-Switching Interfaces. PR1916208

J-Web

  • Junos OS: J-Web: Multiple vulnerabilities resolved in PHP software (CVE-2023-0567, CVE-2023-0662, CVE-2023-3823, CVE-2023-3824, CVE-2023-0568). PR1725808

Layer 2 Ethernet Services

  • Junos OS and Junos OS Evolved: DHCP Option 82 messages from clients being passed unmodified to the DHCP server (CVE-2025-59960). PR1876407

  • Junos OS and Junos OS Evolved: Unix socket used to control the jdhcpd process is world-writable (CVE-2025-59961). PR1877468

Network Management and Monitoring

  • Syslog forwarding intermittently stops post DUT reboot on virtual devices. PR1853209

  • ifStackStatus is not reported correctly for one or more AE bundles. PR1906065

Routing Protocols

  • Junos OS and Junos OS Evolved: BGP update with a set of specific attributes causes rpd crash (CVE-2025-60003). PR1878812

  • Junos OS and Junos OS Evolved: Optional transitive BGP attribute is modified before propagation to peers causing sessions to flap (CVE-2025-60011). PR1884492

User Interface and Configuration

  • J-Web EX app-package upload fails via web interface on EX series running Junos 25.1/25.2. PR1887595