{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2025-21595 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2025-21595 yet. Limit exposure of the affected software until one is available.","what":"CVE-2025-21595 is a high-severity denial of service vulnerability in Juniper Junos, published on 9 Apr 2025. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-21595 and fix it if it is affected.\n\nWhat it is: CVE-2025-21595 is a high-severity denial of service vulnerability in Juniper Junos, published on 9 Apr 2025. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-21595 in the wild and no public exploit code.\n\nAffected product: Juniper Junos. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2025-21595/ (Markdown: https://insights.sbomify.com/CVE-2025-21595/index.md)","id":"CVE-2025-21595","markdown":"https://insights.sbomify.com/CVE-2025-21595/index.md","name":"CVE-2025-21595","record":{"aliases":["GHSA-7fvw-hrgg-4cr6"],"analysis":{"component_type":"network_device","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Juniper network OS","requires_auth":"none","summary":"Adjacent attackers can crash network line cards by sending specific ARP or NDP packets in EVPN-VXLAN environments, causing a denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"juniper","cpe":[{"product":"junos","vendor":"juniper"},{"product":"junos_os_evolved","vendor":"juniper"}],"cvss":{"score":7.1,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L","version":"4.0"},"cwes":[{"id":"CWE-401","name":"Missing Release of Memory after Effective Lifetime"}],"description":"A Missing Release of Memory after Effective Lifetime vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause an FPC to crash, leading to Denial of Service (DoS).\n\nOn all Junos OS and Junos OS Evolved platforms, in an EVPN-VXLAN scenario, when specific ARP packets are received on an IPv4 network, or specific NDP packets are received on an IPv6 network, kernel heap memory leaks, which eventually leads to an FPC crash and restart.\n\nThis issue does not affect MX Series platforms.\nHeap size growth on FPC can be seen using below command.\n\nuser@host\u003e show chassis fpc\n                    Temp CPU Utilization (%) CPU Utilization (%) Memory   Utilization (%)\nSlot State           (C) Total Interrupt     1min   5min   15min   DRAM (MB)   Heap   Buffer\n  0 Online           45     3         0       2       2      2       32768      19       0 \u003c\u003c\u003c\u003c\u003c\u003c\u003c Heap increase in all fPCs\n\nThis issue affects Junos OS:\n\n  *  All versions before 21.2R3-S7,\n  *  21.4 versions before 21.4R3-S4,\n  *  22.2 versions before 22.2R3-S1, \n  *  22.3 versions before 22.3R3-S1, \n  *  22.4 versions before 22.4R2-S2, 22.4R3.\n\nand Junos OS Evolved:\n\n  *  All versions before 21.2R3-S7-EVO,\n  *  21.4-EVO versions before 21.4R3-S4-EVO,\n  *  22.2-EVO versions before 22.2R3-S1-EVO, \n  *  22.3-EVO versions before 22.3R3-S1-EVO, \n\n  *  22.4-EVO versions before 22.4R3-EVO.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Junos OS and Junos OS Evolved: In an EVPN-VXLAN scenario specific ARP or NDP packets cause FPC to crash","id":"CVE-2025-21595","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"juniper:junos","products":["juniper:junos","juniper:junos_os_evolved"],"type":"denial_of_service","year":"2025"},"n_packages":0,"n_references":1,"next":{"headline":"Junos OS: SRX1500,SRX4100,SRX4200: Execution of low-privileged CLI command results in chassisd crash","id":"CVE-2025-21596"},"packages":[],"prev":{"headline":"Junos OS: MX Series: In DS-lite and NAT scenario receipt of crafted IPv6 traffic causes port block","id":"CVE-2025-21594"},"products":["Junos OS","Junos OS Evolved"],"published":"2025-04-09","related":[{"cvss_score":9.8,"headline":"Juniper Junos OS EX Series and SRX Series PHP External Variable Modification","id":"CVE-2023-36845","kev_date_added":"2023-11-13","published":"2023-08-17"},{"cvss_score":8.8,"headline":"Juniper Junos OS Path Traversal","id":"CVE-2020-1631","kev_date_added":"2022-03-25","published":"2020-05-04"},{"cvss_score":6.7,"headline":"Juniper Junos OS Improper Isolation or Compartmentalization","id":"CVE-2025-21590","kev_date_added":"2025-03-13","published":"2025-03-12"},{"cvss_score":5.3,"headline":"Juniper Junos OS SRX Series Missing Authentication for Critical Function","id":"CVE-2023-36851","kev_date_added":"2023-11-13","published":"2023-09-26"},{"cvss_score":5.3,"headline":"Juniper Junos OS EX Series PHP External Variable Modification","id":"CVE-2023-36844","kev_date_added":"2023-11-13","published":"2023-08-17"},{"cvss_score":5.3,"headline":"Juniper Junos OS SRX Series Missing Authentication for Critical Function","id":"CVE-2023-36846","kev_date_added":"2023-11-13","published":"2023-08-17"},{"cvss_score":5.3,"headline":"Juniper Junos OS EX Series Missing Authentication for Critical Function","id":"CVE-2023-36847","kev_date_added":"2023-11-13","published":"2023-08-17"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-04-10","vendors":["Juniper Networks"]},"summary":"Adjacent attackers can crash network line cards by sending specific ARP or NDP packets in EVPN-VXLAN environments, causing a denial of service.","url":"https://insights.sbomify.com/CVE-2025-21595/"}