{"answers":{"affected":"It affects 24 products.","exploited":"There is no known exploitation of CVE-2022-27646 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2022-27646 yet. Limit exposure of the affected software until one is available.","what":"CVE-2022-27646 is a high-severity memory corruption vulnerability in Netgear R6400 Firmware, published on 29 Mar 2023. 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-2022-27646 and fix it if it is affected.\n\nWhat it is: CVE-2022-27646 is a high-severity memory corruption vulnerability in Netgear R6400 Firmware, published on 29 Mar 2023. 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-2022-27646 in the wild and no public exploit code.\n\nAffected product: Netgear R6400 Firmware. 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-2022-27646/ (Markdown: https://insights.sbomify.com/CVE-2022-27646/index.md)","id":"CVE-2022-27646","markdown":"https://insights.sbomify.com/CVE-2022-27646/index.md","name":"CVE-2022-27646","record":{"aliases":["GHSA-qjg8-7gjq-vxf4"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"NETGEAR router","requires_auth":"low_privilege","summary":"A stack-based buffer overflow in the circled daemon allows network-adjacent attackers to execute arbitrary code as root, bypassing authentication.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"zdi","cpe":[{"product":"cbr40_firmware","vendor":"netgear"},{"product":"lbr1020_firmware","vendor":"netgear"},{"product":"lbr20_firmware","vendor":"netgear"},{"product":"r6400_firmware","vendor":"netgear"},{"product":"r6700_firmware","vendor":"netgear"},{"product":"r6900p_firmware","vendor":"netgear"},{"product":"r7000_firmware","vendor":"netgear"},{"product":"r7000p_firmware","vendor":"netgear"},{"product":"r7850_firmware","vendor":"netgear"},{"product":"r7960p_firmware","vendor":"netgear"},{"product":"r8000_firmware","vendor":"netgear"},{"product":"r8000p_firmware","vendor":"netgear"},{"product":"rax200_firmware","vendor":"netgear"},{"product":"rax75_firmware","vendor":"netgear"},{"product":"rax80_firmware","vendor":"netgear"},{"product":"rbr10_firmware","vendor":"netgear"},{"product":"rbr20_firmware","vendor":"netgear"},{"product":"rbr40_firmware","vendor":"netgear"},{"product":"rbr50_firmware","vendor":"netgear"},{"product":"rbs10_firmware","vendor":"netgear"},{"product":"rbs20_firmware","vendor":"netgear"},{"product":"rbs40_firmware","vendor":"netgear"},{"product":"rbs50_firmware","vendor":"netgear"},{"product":"rs400_firmware","vendor":"netgear"}],"cvss":{"score":8,"severity":"high","source":"cna","vector":"CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.0"},"cwes":[{"id":"CWE-121","name":"Stack-based Buffer Overflow"}],"description":"This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700v3 1.0.4.120_10.0.91 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the circled daemon. A crafted circleinfo.txt file can trigger an overflow of a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-15879.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2023-06-01","github_poc":1,"max_poc_stars":8,"metasploit":0,"nuclei":0,"refs":[{"date":"2023-06-01T05:10:56Z","kind":"github_poc","ref":"https://github.com/cyber-defence-campus/netgear_r6700v3_circled","stars":8,"title":"Demonstrate some functionalities of Morion by generating an exploit for CVE-2022-27646 (stack buffer overflow on Netgear R6700v3 routers)."}],"tier":"poc_unverified"},"has_fix":null,"headline":"Memory corruption in R6700v3","id":"CVE-2022-27646","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"netgear:r6400_firmware","products":["netgear:r6400_firmware","netgear:r6700_firmware","netgear:r6900p_firmware","netgear:r7000_firmware","netgear:r7000p_firmware","netgear:r8000_firmware","netgear:r8000p_firmware","netgear:rax200_firmware","netgear:rax75_firmware","netgear:rax80_firmware","netgear:rbr20_firmware","netgear:rbr40_firmware","netgear:rbr50_firmware","netgear:rbs20_firmware","netgear:rbs40_firmware","netgear:rbs50_firmware"],"type":"memory_corruption","year":"2022"},"n_packages":0,"n_references":2,"next":{"headline":"Command injection in R6700v3","id":"CVE-2022-27647"},"packages":[],"prev":{"headline":"Auth bypass in R6700v3","id":"CVE-2022-27645"},"products":["R6700v3"],"published":"2023-03-29","related":[{"cvss_score":10,"headline":"Command injection in n/a","id":"CVE-2021-45630","kev_date_added":null,"published":"2021-12-26"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2023-36187","kev_date_added":null,"published":"2023-09-01"},{"cvss_score":9.8,"headline":"Command injection in n/a","id":"CVE-2021-45617","kev_date_added":null,"published":"2021-12-26"},{"cvss_score":9.6,"headline":"Auth bypass in n/a","id":"CVE-2021-45504","kev_date_added":null,"published":"2021-12-26"},{"cvss_score":9.6,"headline":"Auth bypass in n/a","id":"CVE-2021-45507","kev_date_added":null,"published":"2021-12-26"},{"cvss_score":9.6,"headline":"Auth bypass in n/a","id":"CVE-2021-45508","kev_date_added":null,"published":"2021-12-26"},{"cvss_score":9.6,"headline":"Auth bypass in n/a","id":"CVE-2021-45509","kev_date_added":null,"published":"2021-12-26"}],"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-02-18","vendors":["NETGEAR"]},"summary":"A stack-based buffer overflow in the circled daemon allows network-adjacent attackers to execute arbitrary code as root, bypassing authentication.","url":"https://insights.sbomify.com/CVE-2022-27646/"}