{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-73523 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-73523 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-73523 is a high-severity vulnerability in COVESA Open1722, published on 17 Aug 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-2026-73523 and fix it if it is affected.\n\nWhat it is: CVE-2026-73523 is a high-severity vulnerability in COVESA Open1722, published on 17 Aug 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-2026-73523 in the wild and no public exploit code.\n\nAffected product: COVESA Open1722. 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-2026-73523/ (Markdown: https://insights.sbomify.com/CVE-2026-73523/index.md)","id":"CVE-2026-73523","markdown":"https://insights.sbomify.com/CVE-2026-73523/index.md","name":"CVE-2026-73523","record":{"aliases":["GHSA-ggx8-w5hw-4h29"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Automotive CAN library","requires_auth":"none","summary":"Remote attackers can leak stack memory onto the CAN bus via integer truncation in COVESA Open1722, exposing sensitive process data.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-197","name":"Numeric Truncation Error"}],"description":"COVESA Open1722 through 0.9.2 contains an integer truncation vulnerability in acf-can-listener.c that allows unauthenticated remote attackers to cause the CAN listener to transmit process stack memory onto the CAN bus by sending a rejected UDP datagram with a matching AVTP stream ID. The num_can_msgs variable declared as uint8_t truncates the -1 error return value from avtp_to_can() to 255, causing a write loop to iterate 255 times over a 15-slot stack array and leak approximately 18 KB of adjacent stack memory as roughly 240 CAN frames to any recipient on the CAN bus.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"COVESA Open1722 0.9.2 Stack Memory Disclosure via acf-can-listener.c Integer Truncation","id":"CVE-2026-73523","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"integer_overflow","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Cypht \u003c 2.12.2 XSS via FROM Email Header in Contacts Module","id":"CVE-2026-73524"},"packages":[],"prev":{"headline":"COVESA Open1722 0.9.2 Stack Buffer Overflow via avtp_to_can() in acf-can-listener","id":"CVE-2026-73522"},"products":["Open1722"],"published":"2026-08-17","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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-17","vendors":["COVESA"]},"summary":"Remote attackers can leak stack memory onto the CAN bus via integer truncation in COVESA Open1722, exposing sensitive process data.","url":"https://insights.sbomify.com/CVE-2026-73523/"}