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CVE-2013-4852
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…
Medium6.8EPSS 3.4%
- Published
- Updated
- Reserved
- Assigned by
- mitre
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 3.4% · top 11% of all CVEs (5 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.8.
Weakness
Affected products
n/a
- affected n/a
References (11)
- 54533 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 54517 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://winscp.net/tracker/show_bug.cgi?id=1017 (opens in a new tab)x_refsource_MISCx_transferred
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=718779 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://www.search-lab.hu/advisories/secadv-20130722 (opens in a new tab)x_refsource_MISCx_transferred
- DSA-2736 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- http://svn.tartarus.org/sgt?view=revision&sortby=date&revision=9896 (opens in a new tab)x_refsource_MISCx_transferred
- openSUSE-SU-2013:1347 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- 54379 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-signature-stringlen.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- openSUSE-SU-2013:1355 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2013-4852)Record last updated .