{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-107613 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-107613 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-107613 is a medium-severity vulnerability in GlavSoft TightVNC, published on 8 Oct 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-2026-107613 and fix it if it is affected.\n\nWhat it is: CVE-2026-107613 is a medium-severity vulnerability in GlavSoft TightVNC, published on 8 Oct 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-2026-107613 in the wild and no public exploit code.\n\nAffected product: GlavSoft TightVNC. 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-2026-107613/ (Markdown: https://insights.sbomify.com/CVE-2026-107613/index.md)","id":"CVE-2026-107613","markdown":"https://insights.sbomify.com/CVE-2026-107613/index.md","name":"CVE-2026-107613","record":{"aliases":["GHSA-c4jj-c6x2-r973"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"TightVNC Server","requires_auth":"none","summary":"An attacker can crash the TightVNC Server by triggering a null pointer dereference during DXGI re-initialization failures, causing denial of service.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"securin","cpe":[],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"description":"A NULL pointer dereference vulnerability in the Win8ScreenDriver component of GlavSoft TightVNC Server for Windows before 2.8.88 allows an attacker to crash the server, causing a denial of service. When re-initialization of the DXGI Desktop Duplication driver fails in applyNewScreenProperties() (for example after a GPU reset, display hot-plug or session change), m_drvImpl is left NULL and is subsequently dereferenced without a check by executeDetection(), getScreenBuffer(), grabFb(), getScreenPropertiesChanged() and getCursorPosition().","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":"NULL pointer dereference in TightVNC Server Win8ScreenDriver after failed DXGI re-initialization","id":"CVE-2026-107613","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"null_dereference","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Integer underflow in TightVNC Server cursor shape trimming leads to out-of-bounds read","id":"CVE-2026-107614"},"packages":[],"prev":{"headline":"World-accessible IPC shared memory with predictable name in TightVNC Server","id":"CVE-2026-107612"},"products":["TightVNC"],"published":"2026-10-08","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":"partial"},"state":"PUBLISHED","updated":"2026-10-08","vendors":["GlavSoft"]},"summary":"An attacker can crash the TightVNC Server by triggering a null pointer dereference during DXGI re-initialization failures, causing denial of service.","url":"https://insights.sbomify.com/CVE-2026-107613/"}