{"cve":"CVE-2007-3837","nvd":{"published":"2007-07-17T22:30:00.000","modified":"2026-06-16T22:42:51.857","status":"Modified","description":"Heap-based buffer overflow in HydraIRC 0.3.151 allows remote IRC servers to cause a denial of service (application crash) via a long CTCP request message containing '%' (percent) characters.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://osvdb.org/38625","http://www.portcullis-security.com/uplds/advisories/HydraIRC_bof-07_007.txt","https://exchange.xforce.ibmcloud.com/vulnerabilities/35408","http://osvdb.org/38625","http://www.portcullis-security.com/uplds/advisories/HydraIRC_bof-07_007.txt"],"products":["hydrairc:hydrairc"],"source":"nvd","synced_at":"2026-10-19T19:48:28.501292361+00:00"},"epss":{"cve":"CVE-2007-3837","score":0.01422,"percentile":0.72869,"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."]}