{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-71393 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-71393 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-71393 is a medium-severity vulnerability in GNU Emacs, published on 10 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-71393 and fix it if it is affected.\n\nWhat it is: CVE-2026-71393 is a medium-severity vulnerability in GNU Emacs, published on 10 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-71393 in the wild and no public exploit code.\n\nAffected product: GNU Emacs. 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-2026-71393/ (Markdown: https://insights.sbomify.com/CVE-2026-71393/index.md)","id":"CVE-2026-71393","markdown":"https://insights.sbomify.com/CVE-2026-71393/index.md","name":"CVE-2026-71393","record":{"aliases":["GHSA-4rgf-7285-chf8","UBUNTU-CVE-2026-71393"],"analysis":{"component_type":"mobile_application","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"GNU Emacs Android","requires_auth":"none","summary":"An integer overflow in GNU Emacs for Android allows attackers to execute arbitrary code via a crafted font file delivered through email or web browsing.","user_interaction":"required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CERT-PL","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:L/SA:N","version":"4.0"},"cwes":[{"id":"CWE-190","name":"Integer Overflow or Wraparound"}],"description":"GNU Emacs for Android is vulnerable to an integer overflow in sfnt_read_name_table() in src/sfnt.c. The function computes an allocation size using a 32-bit length value from a TrueType font file without overflow checking. On 32-bit targets, a crafted font causes the calculation to wrap, resulting in an undersized heap allocation. A subsequent read() call writes beyond the buffer, causing a heap buffer overflow. An attacker can deliver a malicious font file via email, EWW (Emacs Web Wowser), or documents with custom faces, causing Emacs to load it. This can lead to heap memory corruption and potential code execution.\n\nThis issue was fixed in commit d51a4722316efe0960994d371e1859099894d1ca","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":"Heap Buffer Overflow in GNU Emacs for Android","id":"CVE-2026-71393","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"integer_overflow","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"Heap Use of Uninitialized Memory in GNU Emacs for Android","id":"CVE-2026-71394"},"packages":[],"prev":{"headline":"Integer Overflow in GNU Emacs for Android","id":"CVE-2026-71392"},"products":["Emacs"],"published":"2026-08-10","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":"2026-08-10","vendors":["GNU"]},"summary":"An integer overflow in GNU Emacs for Android allows attackers to execute arbitrary code via a crafted font file delivered through email or web browsing.","url":"https://insights.sbomify.com/CVE-2026-71393/"}