{"id":"CVE-2013-4852","url":"https://www.cyber-defence.io/tools/cve/CVE-2013-4852","generatedAt":"2026-10-27T19:56:35.145Z","title":"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…","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.","published":"2013-08-19T23:55:09.000Z","lastModified":"2026-06-16T23:58:00.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"2.0","score":6.8,"severity":"MEDIUM","vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P"},"cwe":["CWE-189"],"affected":["winscp/winscp","debian/debian linux","opensuse/opensuse","putty/putty","simon tatham/putty"],"epss":{"score":0.03447,"percentile":0.8892,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (3.45%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=718779","source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-updates/2013-08/msg00035.html","source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-updates/2013-08/msg00041.html","source":"cve@mitre.org"},{"url":"http://secunia.com/advisories/54379","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://secunia.com/advisories/54517","source":"cve@mitre.org"},{"url":"http://secunia.com/advisories/54533","source":"cve@mitre.org"},{"url":"http://svn.tartarus.org/sgt?view=revision&sortby=date&revision=9896","source":"cve@mitre.org"},{"url":"http://winscp.net/tracker/show_bug.cgi?id=1017","source":"cve@mitre.org"},{"url":"http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-signature-stringlen.html","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://www.debian.org/security/2013/dsa-2736","source":"cve@mitre.org"},{"url":"http://www.search-lab.hu/advisories/secadv-20130722","source":"cve@mitre.org"},{"url":"http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=718779","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-updates/2013-08/msg00035.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-updates/2013-08/msg00041.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/54379","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/54517","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/54533","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://svn.tartarus.org/sgt?view=revision&sortby=date&revision=9896","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://winscp.net/tracker/show_bug.cgi?id=1017","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-signature-stringlen.html","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.debian.org/security/2013/dsa-2736","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.search-lab.hu/advisories/secadv-20130722","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2013-4852","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}