{"cve":"CVE-2010-1987","nvd":{"published":"2010-05-20T17:30:01.520","modified":"2026-06-16T23:19:43.220","status":"Modified","description":"Mozilla Firefox 3.6.3 on Windows XP SP3 allows remote attackers to cause a denial of service (memory consumption, out-of-bounds read, and application crash) via JavaScript code that appends long strings to the content of a P element, and performs certain other string concatenation and substring operations, related to the DoubleWideCharMappedString class in USP10.dll and the gfxWindowsFontGroup::GetUnderlineOffset function in xul.dll, a different vulnerability than CVE-2009-1571.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-399"],"references":["http://osvdb.org/64790","http://www.exploit-db.com/exploits/12678","http://www.securityfocus.com/archive/1/511329/100/0/threaded","http://www.x90c.org/advisories/firefox_3.6.3_crash_advisory.txt","https://exchange.xforce.ibmcloud.com/vulnerabilities/58762"],"products":["mozilla:firefox"],"source":"nvd","synced_at":"2026-10-19T19:56:26.512081652+00:00"},"epss":{"cve":"CVE-2010-1987","score":0.01515,"percentile":0.74512,"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."]}