{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-62492 exists.","fix":"No fix has been published for CVE-2025-62492 yet. Limit exposure of the affected software until one is available.","what":"CVE-2025-62492 is a medium-severity vulnerability in QuickJS, published on 16 Oct 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2025-62492 and fix it if it is affected.\n\nWhat it is: CVE-2025-62492 is a medium-severity vulnerability in QuickJS, published on 16 Oct 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-62492 exists.\n\nAffected product: QuickJS. 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-2025-62492/ (Markdown: https://insights.sbomify.com/CVE-2025-62492/index.md)","id":"CVE-2025-62492","markdown":"https://insights.sbomify.com/CVE-2025-62492/index.md","name":"CVE-2025-62492","record":{"aliases":["DEBIAN-CVE-2025-62492","GHSA-7x74-j54q-cmv6","UBUNTU-CVE-2025-62492"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["data_read"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"JavaScript engine","requires_auth":"low_privilege","summary":"An attacker can trigger a heap out-of-bounds read in QuickJS via TypedArray.indexOf, potentially disclosing adjacent memory contents.","user_interaction":"required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Google","cpe":[{"product":"quickjs","vendor":"quickjs_project"}],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:A/AC:H/AT:P/PR:L/UI:P/VC:H/VI:L/VA:L/SC:H/SI:L/SA:L","version":"4.0"},"cwes":[{"id":"CWE-125","name":"Out-of-bounds Read"}],"description":"A vulnerability stemming from floating-point arithmetic precision errors exists in the QuickJS engine's implementation of TypedArray.prototype.indexOf() when a negative fromIndex argument is supplied.\n\n  *  The fromIndex argument (read as a double variable, $d$) is used to calculate the starting position for the search.\n\n  *  If d is negative, the index is calculated relative to the end of the array by adding the array's length (len) to d:\n\n$$d_{new} = d + \\text{len}$$\n\n  *  Due to the inherent limitations of floating-point arithmetic, if the negative value $d$ is extremely small (e.g., $-1 \\times 10^{-20}$), the addition $d + \\text{len}$ can result in a loss of precision, yielding an outcome that is exactly equal to $\\text{len}$.\n\n  *  The result is then converted to an integer index $k$: $k = \\text{len}$.\n\n  *  The search function proceeds to read array elements starting from index $k$. Since valid indices are $0$ to $\\text{len}-1$, starting the read at index $\\text{len}$ is one element past the end of the array.\n\nThis allows an attacker to cause an Out-of-Bounds Read of one element immediately following the buffer. While the scope of this read is small (one element), it can potentially lead to Information Disclosure of adjacent memory contents, depending on the execution environment.","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":"Heap out-of-bounds read in js_typed_array_indexOf in QuickJS","id":"CVE-2025-62492","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"information_disclosure","year":"2025"},"n_packages":0,"n_references":2,"next":{"headline":"Heap out-of-bounds read in js_bigint_to_string1 in QuickJS","id":"CVE-2025-62493"},"packages":[],"prev":{"headline":"Use-after-free in js_std_promise_rejection_check in QuickJS","id":"CVE-2025-62491"},"products":["QuickJS"],"published":"2025-10-16","related":[{"cvss_score":8.8,"headline":"Use-after-free in js_print_object in QuickJS","id":"CVE-2025-62490","kev_date_added":null,"published":"2025-10-16"},{"cvss_score":8.8,"headline":"Use-after-free in js_std_promise_rejection_check in QuickJS","id":"CVE-2025-62491","kev_date_added":null,"published":"2025-10-16"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2025-69654","kev_date_added":null,"published":"2026-03-06"},{"cvss_score":7.5,"headline":"Null dereference in n/a","id":"CVE-2023-48183","kev_date_added":null,"published":"2024-04-23"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2023-31922","kev_date_added":null,"published":"2023-05-12"},{"cvss_score":7.5,"headline":"Memory corruption in n/a","id":"CVE-2020-22876","kev_date_added":null,"published":"2021-07-13"},{"cvss_score":7.1,"headline":"Type confusion in string addition in QuickJS","id":"CVE-2025-62494","kev_date_added":null,"published":"2025-10-16"}],"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":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-10-16","vendors":["QuickJS"]},"summary":"An attacker can trigger a heap out-of-bounds read in QuickJS via TypedArray.indexOf, potentially disclosing adjacent memory contents.","url":"https://insights.sbomify.com/CVE-2025-62492/"}