CVE-2026-33802
MediumCVSS 5.5Exploitation Probability (EPSS)
Low risk2th percentile - higher than 2% of all known CVEs
Summary
A missing authorization vulnerability in the CLI of Junos OS on EX2300, EX4000, EX4100, EX4300-MP, and EX4400 switches allows an authenticated local attacker with no specific permissions to execute a privileged 'request' command, causing a complete traffic impact until automatic recovery.
Risk Assessment
The risk is that a local user without proper privileges can trigger a DoS attack, leading to network disruption and potential business downtime.
Recommendation
Immediately update Junos OS to a patched version as listed in the advisory. Restrict CLI access to trusted users only.
Other vulnerabilities in Junos OS
See all- CVE-2026-21917High
A vulnerability in the Web-Filtering module of Junos OS on SRX Series allows an unauthenticated network-based attacker to cause a Denial-of-Service (DoS). A specially crafted SSL packet causes an FPC crash and restart.
- CVE-2026-21913High
A vulnerability in Juniper Junos OS on EX4000 models with 48 ports (EX4000-48T, EX4000-48P, EX4000-48MP) allows an unauthenticated network-based attacker to cause an FXPC crash and restart by sending a high volume of traffic to the device. This leads to a complete service outage until the device automatically restarts.
- CVE-2026-21905High
A vulnerability in Junos OS on SRX and MX devices with MX-SPC3 or MS-MPC service cards causes an infinite loop in the flow management process (flowd or mspmand) after receiving specific SIP messages over TCP. An unauthenticated attacker can send multiple such messages, leading to watchdog timer expiration and process crash, resulting in a Denial of Service (DoS). The issue only occurs over TCP, not UDP.
- CVE-2025-60003High
A Buffer Over-read 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 device receives a BGP update with a set of specific optional transitive attributes over an established peering session, rpd will crash and restart when attempting to advertise the received information to another peer.
- CVE-2025-59960High
A vulnerability in the DHCP service (jdhcpd) of Junos OS and Junos OS Evolved allows a DHCP client in one subnet to exhaust the address pools of other subnets, leading to a Denial of Service (DoS) on the downstream DHCP server. The issue arises from improper handling of DHCP DISCOVER packets with Option 82 in 'forward-only' mode, which are forwarded unmodified instead of being dropped, consuming addresses from the pool.
- CVE-2016-4922High
A vulnerability in Junos OS allows unauthorized access to the operating system through certain combinations of CLI commands. Users with the appropriate permissions can achieve elevated privileges and gain complete control of the device.
- CVE-2017-2344High
An internal Junos OS sockets library is vulnerable to a buffer overflow, which may lead to a denial of service (kernel panic) or privilege escalation through local code execution. The routines are only accessible via programs running on the device.
- CVE-2017-2303High
On Juniper Networks products or platforms running Junos OS versions prior to 12.1X46-D50, 12.1X47-D40, 12.3R13, 12.3X48-D30, 13.2X51-D40, 13.3R10, 14.1R8, 14.1X53-D35, 14.1X55-D35, 14.2R5, 15.1F6, 15.1R3, 15.1X49-D30, 15.1X49-D40, 15.1X53-D35, where RIP is enabled, certain RIP advertisements may cause the RPD daemon to crash, resulting in a denial of service condition.
- CVE-2017-2302High
On Juniper Networks products running Junos OS versions prior to 12.1X46-D55, 12.1X47-D45, 12.3R13, 12.3X48-D35, 13.3R10, 14.1R8, 14.1X53-D40, 14.1X55-D35, 14.2R6, 15.1F2 or 15.1R1, where the BGP add-path feature is enabled with 'send' option or with both 'send' and 'receive' options, a network-based attacker can cause the rpd daemon to crash and restart. Repeated crashes of the rpd daemon can result in an extended denial of service condition.
- CVE-2017-2301High
On Juniper Networks products running Junos OS versions prior to 11.4R13-S3, 12.1X46-D60, 12.3R12-S2, 13.2X51-D40, 13.3R10, 14.1R8, 14.1X53-D12, 14.1X55-D35, 14.2R7, 15.1F6, 15.1R3, 15.1X49-D60, and 15.1X53-D30, when DHCPv6 is enabled, receiving a crafted DHCPv6 packet causes the jdhcpd daemon to crash and restart. Repeated crashes of the jdhcpd process may lead to an extended denial of service condition for subscribers attempting to obtain IPv6 addresses.
Original NVD description (English source)
A Missing Authorization vulnerability in the CLI of Juniper Networks Junos OS on EX Series allows a local, authenticated attacker to cause a Denial-of-Service (DoS). On EX2300, EX4000, EX4100, EX4300-MP (Multigigabit) and EX4400 switches, an authenticated, local attacker with no specific permissions or class can execute a specific, privileged CLI 'request' command which will cause complete traffic impact until the system automatically recovers. This issue affects Junos OS on EX2300, EX4000, EX4100, EX4300-MP (Multigigabit) and EX4400: * 23.2R2 versions before 23.2R2-S6, * 23.4 versions before 23.4R2-S8, * 24.2 versions before 24.2R2-S4, * 24.4 versions before 24.4R2-S3, * 25.2 versions before 25.2R2, * 25.4 versions before 25.4R1-S1.