{"cve":"CVE-2013-0238","nvd":{"published":"2013-02-13T01:55:04.090","modified":"2026-06-16T23:49:01.840","status":"Modified","description":"The try_parse_v4_netmask function in hostmask.c in IRCD-Hybrid before 8.0.6 does not properly validate masks, which allows remote attackers to cause a denial of service (crash) via a mask that causes a negative number to be parsed.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-20"],"references":["http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=699267","http://osvdb.org/89623","http://secunia.com/advisories/51948","http://secunia.com/advisories/52106","http://svn.ircd-hybrid.org:8000/viewcvs.cgi/ircd-hybrid/trunk/src/hostmask.c?r1=1786&r2=1785&pathrev=1786"],"products":["ircd-hybrid:ircd-hybrid"],"source":"nvd","synced_at":"2026-10-19T20:27:27.940201468+00:00"},"epss":{"cve":"CVE-2013-0238","score":0.09962,"percentile":0.95598,"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."]}