{"answers":{"affected":"It affects 1 product.","exploited":"Yes. Attackers have exploited CVE-2026-76504 in the wild since at least 30 Sep 2026.","fix":"No fix has been published for CVE-2026-76504 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 3 Oct 2026.","what":"CVE-2026-76504 is a critical authentication bypass vulnerability in Cisco Catalyst Sd-Wan Manager, published on 30 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-76504 and fix it if it is affected.\n\nWhat it is: CVE-2026-76504 is a critical authentication bypass vulnerability in Cisco Catalyst Sd-Wan Manager, published on 30 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: Yes. Attackers have exploited CVE-2026-76504 in the wild since at least 30 Sep 2026.\n\nAffected product: Cisco Catalyst Sd-Wan Manager. 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-2026-76504/ (Markdown: https://insights.sbomify.com/CVE-2026-76504/index.md)","id":"CVE-2026-76504","markdown":"https://insights.sbomify.com/CVE-2026-76504/index.md","name":"CVE-2026-76504","record":{"aliases":["GHSA-xqjc-v467-8fvf"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["privilege_escalation","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Cisco SD-WAN Manager","requires_auth":"none","summary":"Unauthenticated remote attackers can bypass authentication via crafted HTTP requests to gain admin privileges on Cisco Catalyst SD-WAN Manager.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"cisco","cpe":[{"product":"catalyst_sd-wan_manager","vendor":"cisco"}],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-177","name":"Improper Handling of URL Encoding (Hex Encoding)"}],"description":"A vulnerability in the API session-based authentication management of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to access an affected system with privileges of the admin user.\r\n\r\nThis vulnerability is due to improper handling of URI encoding in an HTTP request, which allows the request to bypass an authentication rule that is intended to restrict access to a specific API endpoint. An attacker could exploit this vulnerability by sending a crafted HTTP request to the API of the affected system. A successful exploit could allow the attacker to bypass authentication and gain access to the API as the admin user.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-09-30","github_poc":3,"max_poc_stars":2,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-09-30T19:40:15Z","kind":"github_poc","ref":"https://github.com/ShadowForge-Cyber/CVE-2026-76504-Proof-of-concept","stars":2,"title":"EUVD-2026-89950  Improper Handling of URL Encoding (Hex Encoding) (CWE-177)"},{"date":"2026-10-23T02:00:51Z","kind":"github_poc","ref":"https://github.com/pastelghost3/cve-2026-76504-nuclei","stars":0,"title":"Nuclei template for CVE-2026-76504 — Cisco vManage authentication bypass"},{"date":"2026-10-23T17:25:14Z","kind":"github_poc","ref":"https://github.com/maxprog-svg/CVE-2026-76504-Cisco","stars":0,"title":" CVE-2026-76504 — Cisco Catalyst SD-WAN Manager Auth Bypass Exploit"}],"tier":"exploited"},"has_fix":null,"headline":"Cisco Catalyst SD-WAN Manager Hex Encoding","id":"CVE-2026-76504","indexable":true,"kev":{"dateAdded":"2026-09-30","dueDate":"2026-10-03","knownRansomwareCampaignUse":"Unknown","product":"Catalyst SD-WAN Manager","requiredAction":"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.","vendorProject":"Cisco","vulnerabilityName":"Cisco Catalyst SD-WAN Manager Hex Encoding Vulnerability"},"kind":"cve","links":{"ecosystem":null,"product":"cisco:catalyst_sd-wan_manager","products":["cisco:catalyst_sd-wan_manager"],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Cisco IOS XR Software for ASR 9000 Series Routers IPv4 Unicast Packets Denial of Service Vulnerability","id":"CVE-2026-76505"},"packages":[],"prev":{"headline":"Cisco Nexus 9000 Series Switches SRv6 OAM (NGOAM) Remote Code Execution Vulnerability","id":"CVE-2026-76501"},"products":["Cisco Catalyst SD-WAN Manager"],"published":"2026-09-30","related":[{"cvss_score":10,"headline":"Cisco Catalyst SD-WAN Controller Authentication Bypass","id":"CVE-2026-20182","kev_date_added":"2026-05-14","published":"2026-05-14"},{"cvss_score":10,"headline":"Cisco Catalyst SD-WAN Controller and Manager Authentication Bypass","id":"CVE-2026-20127","kev_date_added":"2026-02-25","published":"2026-02-25"},{"cvss_score":7.8,"headline":"Cisco Catalyst SD-WAN Manager Improper Encoding or Escaping of Output","id":"CVE-2026-20245","kev_date_added":"2026-06-09","published":"2026-06-04"},{"cvss_score":7.8,"headline":"Cisco SD-WAN Path Traversal","id":"CVE-2022-20775","kev_date_added":"2026-02-25","published":"2022-09-30"},{"cvss_score":7.5,"headline":"Cisco Catalyst SD-WAN Manager Storing Passwords in a Recoverable Format","id":"CVE-2026-20128","kev_date_added":"2026-04-20","published":"2026-02-25"},{"cvss_score":6.5,"headline":"Cisco Catalyst SD-WAN Manager Directory or Path Traversal","id":"CVE-2026-20262","kev_date_added":"2026-06-15","published":"2026-06-15"}],"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":"open","licence":"CC0 1.0","name":"CISA KEV"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"active","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-02","vendors":["Cisco"]},"summary":"Unauthenticated remote attackers can bypass authentication via crafted HTTP requests to gain admin privileges on Cisco Catalyst SD-WAN Manager.","url":"https://insights.sbomify.com/CVE-2026-76504/"}