{"cve":"CVE-2021-27135","nvd":{"published":"2021-02-10T16:15:13.787","modified":"2026-06-17T03:44:19.653","status":"Modified","description":"xterm before Patch #366 allows remote attackers to execute arbitrary code or cause a denial of service (segmentation fault) via a crafted UTF-8 combining character sequence.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":[],"references":["http://seclists.org/fulldisclosure/2021/May/52","http://www.openwall.com/lists/oss-security/2021/02/10/7","https://access.redhat.com/security/cve/CVE-2021-27135","https://bugzilla.redhat.com/show_bug.cgi?id=1927559","https://bugzilla.suse.com/show_bug.cgi?id=1182091"],"products":["debian:debian_linux","fedoraproject:fedora","invisible-island:xterm"],"source":"nvd","synced_at":"2026-10-19T21:14:10.479542811+00:00"},"epss":{"cve":"CVE-2021-27135","score":0.07844,"percentile":0.94683,"date":"2026-10-31"},"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."]}