{"cve":"CVE-2009-0388","nvd":{"published":"2009-02-04T19:30:00.530","modified":"2026-06-16T23:04:56.623","status":"Modified","description":"Multiple integer signedness errors in (1) UltraVNC 1.0.2 and 1.0.5 and (2) TightVnc 1.3.9 allow remote VNC servers to cause a denial of service (heap corruption and application crash) or possibly execute arbitrary code via a large length value in a message, related to the (a) ClientConnection::CheckBufferSize and (b) ClientConnection::CheckFileZipBufferSize functions in ClientConnection.cpp.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-189"],"references":["http://forum.ultravnc.info/viewtopic.php?t=14654","http://secunia.com/advisories/33807","http://vnc-tight.svn.sourceforge.net/viewvc/vnc-tight?view=rev&revision=3564","http://www.coresecurity.com/content/vnc-integer-overflows","http://www.securityfocus.com/archive/1/500632/100/0/threaded"],"products":["tightvnc:tightvnc","ultravnc:ultravnc"],"source":"nvd","synced_at":"2026-10-19T19:53:23.791937413+00:00"},"epss":{"cve":"CVE-2009-0388","score":0.13334,"percentile":0.96403,"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."]}