{"cve":"CVE-2013-4852","nvd":{"published":"2013-08-19T23:55:09.077","modified":"2026-06-16T23:58:00.033","status":"Modified","description":"Integer overflow in PuTTY 0.62 and earlier, WinSCP before 5.1.6, and other products that use PuTTY allows remote SSH servers to cause a denial of service (crash) and possibly execute arbitrary code in certain applications that use PuTTY via a negative size value in an RSA key signature during the SSH handshake, which triggers a heap-based buffer overflow.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-189"],"references":["http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=718779","http://lists.opensuse.org/opensuse-updates/2013-08/msg00035.html","http://lists.opensuse.org/opensuse-updates/2013-08/msg00041.html","http://secunia.com/advisories/54379","http://secunia.com/advisories/54517"],"products":["debian:debian_linux","opensuse:opensuse","putty:putty","simon_tatham:putty","winscp:winscp"],"source":"nvd","synced_at":"2026-10-19T20:29:16.037019470+00:00"},"epss":{"cve":"CVE-2013-4852","score":0.03447,"percentile":0.89005,"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."]}