{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-101283 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-101283 is a critical memory corruption vulnerability in esnet iperf3, 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-2026-101283 and fix it if it is affected.\n\nWhat it is: CVE-2026-101283 is a critical memory corruption vulnerability in esnet iperf3, published on 30 Sep 2026. 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-2026-101283 in the wild and no public exploit code.\n\nAffected product: esnet iperf3. 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-2026-101283/ (Markdown: https://insights.sbomify.com/CVE-2026-101283/index.md)","id":"CVE-2026-101283","markdown":"https://insights.sbomify.com/CVE-2026-101283/index.md","name":"CVE-2026-101283","record":{"aliases":["BELL-CVE-2026-101283","DEBIAN-CVE-2026-101283","GHSA-pwcx-5qh6-2pxc","UBUNTU-CVE-2026-101283"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Network performance tool","requires_auth":"none","summary":"Unauthenticated attackers can trigger a heap buffer overflow in iperf3 via oversized authtokens, potentially leading to code execution or service disruption.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Anthropic","cpe":[],"cvss":{"score":9.2,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-122","name":"Heap-based Buffer Overflow"}],"description":"iperf3 3.20–3.21 (esnet/iperf) has a pre-auth heap buffer overflow in decrypt_rsa_message(): a 256-byte RSA buffer is BIO_read with the attacker-controlled ciphertext length (guard warns only), so an unauthenticated client overflows the heap via an oversized authtoken; fixed in 3.22","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Memory corruption in iperf3","id":"CVE-2026-101283","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Authentication bypass in Stela by Diaple Networking","id":"CVE-2026-101287"},"packages":[],"prev":{"headline":"Trusted Domain Project OpenDMARC SPF Macro opendmarc_spf.c opendmarc_sp2_find_mailfrom_domain improper authentication","id":"CVE-2026-101281"},"products":["iperf3"],"published":"2026-09-30","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"total"},"state":"PUBLISHED","updated":"2026-10-01","vendors":["esnet"]},"summary":"Unauthenticated attackers can trigger a heap buffer overflow in iperf3 via oversized authtokens, potentially leading to code execution or service disruption.","url":"https://insights.sbomify.com/CVE-2026-101283/"}