{"cve":"CVE-2026-53910","nvd":{"published":"2026-07-22T14:17:21.030","modified":"2026-10-24T13:10:00.147","status":"Awaiting Analysis","description":"diff3 tool from GNU diffutils is vulnerable to a heap‑based buffer overflow due to multiple signed integer overflows in line‑mapping calculations. Incorrect arithmetic in mapping line ranges can result in corrupted values being used for memory allocation and loop bounds.\nWhen processing crafted diff output, these overflows may cause the application to allocate insufficient memory and subsequently perform out‑of‑bounds writes during internal processing. \nAn attacker who can control the output of the diff program used by diff3 (e.g. via --diff-program pointing to a malicious script) can trigger out-of-bounds writes, resulting in a crash and potentially remote code execution depending on the environment.\n\n\nThis issue has been fixed in commit 9ff04d5b84743e331e80b589335a52c5480d1815 \n\nNOTE:\nThe project maintainers claim that this is not a security issue. They state that the worst outcome this issue can cause is a crash of diff and that it cannot be used to escalate privileges.","cvss_v4":{"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:L/SI:L/SA:L","score":2.1},"cvss_v3":null,"cwes":["CWE-190"],"references":["https://cert.pl/en/posts/2026/07/CVE-2026-53910","https://cgit.git.savannah.gnu.org/cgit/diffutils.git/commit/?id=73ed7ce85cc78effb94daf028c9af6b4e5252e50","https://cgit.git.savannah.gnu.org/cgit/diffutils.git/commit/?id=9ff04d5b84743e331e80b589335a52c5480d1815","https://git.savannah.gnu.org/cgit/diffutils.git/"],"products":[],"source":"nvd","synced_at":"2026-10-24T16:53:27.712498749+00:00"},"epss":{"cve":"CVE-2026-53910","score":0.00332,"percentile":0.26121,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}