{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-21601 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2025-21601 yet. Limit exposure of the affected software until one is available.","what":"CVE-2025-21601 is a high-severity denial of service vulnerability in Juniper Junos, published on 9 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-21601 and fix it if it is affected.\n\nWhat it is: CVE-2025-21601 is a high-severity denial of service vulnerability in Juniper Junos, published on 9 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-21601 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-2025-21601/ (Markdown: https://insights.sbomify.com/CVE-2025-21601/index.md)","id":"CVE-2025-21601","markdown":"https://insights.sbomify.com/CVE-2025-21601/index.md","name":"CVE-2025-21601","record":{"aliases":["GHSA-95f3-h98w-ww8w"],"analysis":{"component_type":"network_device","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"Juniper Junos OS","requires_auth":"none","summary":"Unauthenticated attackers can cause a sustained denial of service by sending genuine packets to devices with web management enabled.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"juniper","cpe":[{"product":"junos","vendor":"juniper"}],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/V:C/RE:M/U:Amber","version":"4.0"},"cwes":[{"id":"CWE-573","name":"Improper Following of Specification by Caller"}],"description":"An Improper Following of Specification by Caller vulnerability in web management (J-Web, Captive Portal, 802.1X, Juniper Secure Connect (JSC) of Juniper Networks Junos OS on SRX Series, EX Series, MX240, MX480, MX960, QFX5120 Series, allows an unauthenticated, network-based attacker, sending genuine traffic targeted to the device to cause the CPU to climb until the device becomes unresponsive. \n\nContinuous receipt of these packets will create a sustained Denial of Service (DoS) condition.\n\nThis issue affects Junos OS: \n\n  *  All versions before 21.4R3-S9,\n  *  from 22.2 before 22.2R3-S5,\n  *  from 22.4 before 22.4R3-S4,\n  *  from 23.2 before 23.2R2-S3,\n  *  from 23.4 before 23.4R2-S3,\n  *  from 24.2 before 24.2R1-S1, 24.2R2.\n\nAn indicator of compromise is to review the CPU % of the httpd process in the CLI:\ne.g.\n  show system processes extensive | match httpd  PID nobody       52    0    20M    191M select   2   0:01   80.00% httpd{httpd} \u003c\u003c\u003c\u003c\u003c the percentage of httpd usage if high may be an indicator","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":"Denial of service in Junos OS","id":"CVE-2025-21601","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"juniper:junos","products":["juniper:junos"],"type":"denial_of_service","year":"2025"},"n_packages":0,"n_references":1,"next":{"headline":"Junos OS and Junos OS Evolved: Receipt of specially crafted BGP update packet causes RPD crash","id":"CVE-2025-21602"},"packages":[],"prev":{"headline":"Denial of service in Junos OS","id":"CVE-2025-21600"},"products":["Junos OS"],"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-04-15","vendors":["Juniper Networks"]},"summary":"Unauthenticated attackers can cause a sustained denial of service by sending genuine packets to devices with web management enabled.","url":"https://insights.sbomify.com/CVE-2025-21601/"}