{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-30789 exists.","fix":"No fix has been published for CVE-2026-30789 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-30789 is a medium-severity vulnerability in rustdesk-client RustDesk Client, published on 5 Mar 2026. 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-2026-30789 and fix it if it is affected.\n\nWhat it is: CVE-2026-30789 is a medium-severity vulnerability in rustdesk-client RustDesk Client, published on 5 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-30789 exists.\n\nAffected product: rustdesk-client RustDesk Client. 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-2026-30789/ (Markdown: https://insights.sbomify.com/CVE-2026-30789/index.md)","id":"CVE-2026-30789","markdown":"https://insights.sbomify.com/CVE-2026-30789/index.md","name":"CVE-2026-30789","record":{"aliases":["GHSA-9qf7-q6gx-q652"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["account_takeover"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"RustDesk remote desktop client","requires_auth":"low_privilege","summary":"Rogue servers can capture weak authentication proofs to perform offline brute-force attacks, recovering user passwords.","user_interaction":"not_required","vuln_class":"weak_cryptography"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VULSec","cpe":[{"product":"rustdesk","vendor":"rustdesk"}],"cvss":{"score":5.7,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-916","name":"Use of Password Hash With Insufficient Computational Effort"}],"description":"Use of Password Hash With Insufficient Computational Effort, Improper Restriction of Excessive Authentication Attempts vulnerability in rustdesk-client RustDesk Client rustdesk-client on Windows, MacOS, Linux, iOS, Android (Client login, peer authentication modules) allows Password Brute Forcing.\n\nThe authentication proof is SHA256(SHA256(password + salt) + challenge), where both the salt and the challenge are generated entirely by the server with no client-side nonce, and the hash uses no slow key-derivation function. A rogue or on-path API/relay server (see CVE-2026-30794 / CVE-2026-30797) can issue a chosen salt and challenge, capture the resulting proof, and recover the password offline. The capture-replay claim (CWE-294) is withdrawn: the challenge is regenerated per connection (challenge = Config::get_auto_password(6)), so a captured proof is not replayable against the legitimate server. The 1.4.7 OTP brute-force limiter and the existing LOGIN_FAILURES counter constrain only ONLINE attempts and do not address offline recovery.\n\nThis vulnerability is associated with program files src/client.rs and program routines handle_hash(), handle_login_from_ui() (login proof construction).\n\nThis issue affects RustDesk Client: through 1.4.8.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"RustDesk Auth Proof Uses Server-Controlled Salt/Challenge and Fast Double-SHA256, Enabling Offline Brute-Force","id":"CVE-2026-30789","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"weak_cryptography","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.","id":"CVE-2026-30790"},"packages":[],"prev":{"headline":"RustDesk Encrypts Local Passwords with World-Readable Machine ID and Fixed Zero Nonce (XSalsa20-Poly1305)","id":"CVE-2026-30785"},"products":["RustDesk Client"],"published":"2026-03-05","related":[{"cvss_score":9.8,"headline":"Misconfiguration in n/a","id":"CVE-2024-25140","kev_date_added":null,"published":"2024-02-06"},{"cvss_score":9.3,"headline":"RustDesk Flutter URI Handler Sets Permanent Password Without Privilege Check or User Confirmation","id":"CVE-2026-30793","kev_date_added":null,"published":"2026-03-05"},{"cvss_score":9.3,"headline":"RustDesk rustdesk://config/ URI Silently Re-homes Client to Attacker-Controlled Server","id":"CVE-2026-30797","kev_date_added":null,"published":"2026-03-05"},{"cvss_score":8.7,"headline":"RustDesk Client Accepts Pseudo-Encrypted Config Strings Without Cryptographic Validation","id":"CVE-2026-30791","kev_date_added":null,"published":"2026-03-05"},{"cvss_score":8.7,"headline":"RustDesk HTTP Client Silently Accepts Invalid TLS Certificates After Handshake Failure","id":"CVE-2026-30795","kev_date_added":null,"published":"2026-03-05"},{"cvss_score":8.3,"headline":"RustDesk Client Blindly Merges Unauthenticated Strategy Payloads, Bypassing Local Security Settings","id":"CVE-2026-30792","kev_date_added":null,"published":"2026-03-05"},{"cvss_score":8.2,"headline":"RustDesk Encrypts Local Passwords with World-Readable Machine ID and Fixed Zero Nonce (XSalsa20-Poly1305)","id":"CVE-2026-30785","kev_date_added":null,"published":"2026-03-05"}],"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":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-06-22","vendors":["rustdesk-client"]},"summary":"Rogue servers can capture weak authentication proofs to perform offline brute-force attacks, recovering user passwords.","url":"https://insights.sbomify.com/CVE-2026-30789/"}